MAX5423ETA+T中文资料

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MAX3280EAUK+T中文资料

Features
o ESD Protection: ±15kV–Human Body Model ±6kV–IEC 1000-4-2, Contact Discharge ±12kV–IEC 1000-4-2, Air-Gap Discharge
o Guaranteed 52Mbps Data Rate o Guaranteed 15ns Receiver Propagation Delay o Guaranteed 2ns Receiver Skew o Guaranteed 8ns Package-to-Package Skew Time o VL Pin for Connection to FPGAs/ASICs o Allow Up to 128 Transceivers on the Bus
Receiver Output Voltage (RO)....................-0.3V to (VCC + 0.3V) Receiver Output Voltage
(RO) (MAX3284E) .....................................-0.3V to (VL + 0.3V) Receiver Output Short-Circuit Current .......................Continuous
ENABLE —
Active High Active Low
—
DATA RATE 52Mbps 52Mbps 52Mbps
52Mbps (Note 1)
PACKAGE 5-Pin SOT23 6-Pin SOT23 6-Pin SOT23 6-Pin SOT23
________________________________________________________________ Maxim Integrated Products 1

MAX4173TEUT-T中文资料

Applications
Notebook Computers
Portable/Battery-Powered Systems
Smart Battery Packs/Chargers
Cell Phones
Power-Management Systems
General System/Board-Level Current Monitoring
The combination of three gain versions and a userselectable external sense resistor sets the full-scale current reading. This feature offers a high level of integration, resulting in a simple and compact currentsense solution.
+20V/V (MAX4173T) +50V/V (MAX4173F) +100V/V (MAX4173H) ♦ ±0.5% Full-Scale Accuracy ♦ ±0.3mV Input Offset Voltage (MAX4173T) ♦ 420µA Supply Current ♦ Wide 1.7MHz Bandwidth (MAX4173T) ♦ +3V to +28V Operating Supply ♦ Available in Space-Saving SOT23-6 Package
Typical Operating Circuit
0 TO +28V
VSENSE
+3V TO +28V 0.1µF

MAX4533CAP中文资料

General DescriptionThe MAX4533 quad, single-pole/double-throw (SPDT),fault-protected analog switch is pin-compatible with the industry-standard MAX333 and MAX333A. The MAX4533features fault-protected inputs and Rail-to-Rail ®signal handling. The normally open (NO_ ) and normally closed (NC_ ) terminals are protected from overvoltage faults up to ±25V with power on and up to ±40V with power off.During a fault condition, NO_ and NC_ become high impedance with only nanoamperes of leakage current flowing to the source. In addition, the output (COM_)clamps to the appropriate polarity supply rail and pro-vides up to ±10mA of load current. This ensures unam-biguous rail-to-rail outputs when a fault occurs.The MAX4533 operates from dual ±4.5V to ±18V power supplies or a single +9V to +36V supply. All digital inputs have +0.8V and +2.4V logic thresholds, ensuring both TTL and CMOS logic compatibility when using ±15V supplies or a +12V supply. On-resistance is 175Ωmax and is matched between switches to 10Ωmax. The off-leakage current is only 0.5nA at T A =+25°C and 10nA at T A =+85°C.ApplicationsRedundant/Backup Systems Portable Instruments Test EquipmentData-Acquisition Communications Systems SystemsIndustrial and Process ControlAvionics SystemsFeatureso Rail-to-Rail Signal Handlingo ±40V Fault Protection with Power Off±25V Fault Protection with ±15V Supplies o All Switches Off with Power Offo No Power-Supply Sequencing Required During Power-Up or Power-Down o Output Clamped to Appropriate Supply Voltage During Fault Condition—No Transition Glitch o 1k Ω(typ) Output Clamp Resistance During Overvoltage o 175Ω(max) Signal Paths with ±15V Supplies o 20ns (typ) Fault Response Time o ±4.5V to ±18V Dual Supplies +9V to +36V Single Supplyo Pin-Compatible with Industry-Standard MAX333/MAX333Ao TTL/CMOS-Compatible Logic Inputs with ±15V or Single +9V to +15V SuppliesMAX4533†Quad, Rail-to-Rail, Fault-Protected,SPDT Analog Switch________________________________________________________________Maxim Integrated Products 1Typical Operating Circuit19-1452; Rev 1; 10/99Pin Configuration/Functional DiagramOrdering InformationRail-to-Rail is a registered trademark of Nippon Motorola, Ltd.†Patent PendingFor pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .M A X 4533Quad, Rail-to-Rail, Fault-Protected,SPDT Analog SwitchABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS —Dual Supplies(V+ = +15V, V- = -15V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 3)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Voltages Referenced to GNDV+........................................................................-0.3V to +44.0V V-.........................................................................-44.0V to +0.3V V+ to V-................................................................-0.3V to +44.0V COM_, IN_ (Note 1).............................(V- - 0.3V) to (V+ + 0.3V)NC_, NO_ (Note 2)..................................(V+ - 40V) to (V- + 40V)NC_, NO_ to COM_.................................................-40V to +40V NC_, NO_ Overvoltage with Switch Power On(supplies at ±15V)................................................-30V to +30V NC_, NO_ Overvoltage with Switch Power Off........-40V to +40V Continuous Current into Any Terminal..............................±30mA Peak Current into Any Terminal(pulsed at 1ms,10% duty cycle)....................................±50mAContinuous Power Dissipation (T A = +70°C)20-Pin SSOP (derate 10.53mW/°C above +70°C)........842mW 20-Pin Wide SO (derate 10.00mW/°C above +70°C)..800mW 20-Pin Plastic DIP (derate 11.11mW/°C above +70°C)889mW 20-Pin CERDIP (derate 11.11mW/°C above +70°C).....889mW Operating Temperature RangesMAX4533C_ _......................................................0°C to +70°C MAX4533E_ _...................................................-40°C to +85°C MAX4533M_ _.................................................-55°C to +125°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CNote 1:COM_ and IN_ pins are not fault protected. Signals on COM_ or IN_ exceeding V+ or V- are clamped by internal diodes.Limit forward diode current to maximum current rating.Note 2:NC_ and NO_ pins are fault protected. Signals on NC_ or NO_ exceeding -25V to +25V may damage the device. Theselimits apply with power applied to V+ or V-. The limit is ±40V with V+ = V- = 0.MAX4533Quad, Rail-to-Rail, Fault-Protected,SPDT Analog Switch_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS —Dual Supplies (continued)(V+ = +15V, V- = -15V, T= T to T , unless otherwise noted. Typical values are at T = +25°C.) (Note 3)M A X 4533Quad, Rail-to-Rail, Fault-Protected,SPDT Analog Switch 4_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS —Single Supply(V+ = +12V, V- = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 3)MAX4533Quad, Rail-to-Rail, Fault-Protected,SPDT Analog Switch_______________________________________________________________________________________5Note 3:The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.Note 4:∆R ON = R ON(MAX)- R ON(MIN).Note 5:Leakage parameters are 100% tested at maximum-rated hot temperature and guaranteed by correlation at T A = +25°C.Note 6:Guaranteed by design.Note 7:Off-isolation = 20log10(V COM_/ V NO_), V COM_= output, V NO_= input to off switch.Note 8:Between any two analog inputs.Note 9:Leakage testing for single-supply operation is guaranteed by testing with dual supplies.ELECTRICAL CHARACTERISTICS —Single Supply (continued)(V+ = +12V, V- = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 3)M A X 4533Quad, Rail-to-Rail, Fault-Protected,SPDT Analog Switch 6_______________________________________________________________________________________Typical Operating Characteristics(V+ = +15V, V- = -15V, T A = +25°C, unless otherwise noted.)906030120150210180240270300330360390-18-12-9-15-6-30369121518ON-RESISTANCE vs. V COM(DUAL SUPPLIES)V COM (V)R O N (Ω)0100502001502503003504000101552025303540ON-RESISTANCE vs. V COM(SINGLE SUPPLY)V COM (V)R O N (Ω)755025100125150175200225250-15-5-10051015ON-RESISTANCE vs. V COM AND TEMPERATURE (DUAL SUPPLIES)V COM (V)R O N (Ω)010050250200150400350300450042681012ON-RESISTANCE vs. V COM AND TEMPERATURE (SINGLE SUPPLY)V COM (V)R O N (Ω)0200100400300500600±4±10±12±6±8±14±16±18TURN-ON/TURN-OFF TIME vs. SUPPLY VOLTAGE (DUAL SUPPLIES)SUPPLY VOLTAGE (V)t O N , t O F F (n s)0.00010.010.00110.1100101000-55-155-3525456585105125ON/OFF-LEAKAGE CURRENTvs. TEMPERATURETEMPERATURE (°C)L E A K A G E C U R R E NT (A )01.00.52.01.53.02.53.54.54.05.0-15-10-5015510CHARGE INJECTION vs. VCOMV COM (V)Q (p C )50150100200250816122024283236TURN-ON/TURN-OFF TIME vs.SUPPLY VOLTAGE (SINGLE SUPPLY)SUPPLY VOLTAGE (V)t O N , t O F F (n s )40208060120100140180160200-55-15525-35456585105125TURN-ON/TURN-OFF TIME vs.TEMPERATURE (DUAL SUPPLIES)TEMPERATURE (°C)t O N , t O F F (n s )MAX4533Quad, Rail-to-Rail, Fault-Protected,SPDT Analog Switch_______________________________________________________________________________________750100150200250-552545-155-356585105125TURN-ON/TURN-OFF TIME vs.TEMPERATURE (SINGLE SUPPLY)TEMPERATURE (°C)t O N , t O F F (n s )-500-300-400-100-2001000200400300500-55-15525-35456585105125POWER-SUPPLY CURRENT vs.TEMPERATURE (DUAL SUPPLIES, V IN = 0)TEMPERATURE (°C)S U P P L Y C U R R E N T (µA )-600-200-4002000600400800-55-155-3525456585105125POWER-SUPPLY CURRENT vs.TEMPERATURE (DUAL SUPPLIES, V IN= +5V)TEMPERATURE (°C)S U P P L Y C U R R E N T (µA )10050250200150350300400-55525-35-15456585105125POWER-SUPPLY CURRENT vs.TEMPERATURE (SINGLE SUPPLY)TEMPERATURE (°C)S U P P L Y C U R R E N T (µA )01.00.52.01.52.53.04812162024283236LOGIC-LEVEL THRESHOLD vs. SUPPLY VOLTAGESUPPLY VOLTAGE (V)L O G I C -L E V E L T H RE S H O L D (V )COM_(10V/div)NO_ or NC_(10V/div)OVOVOVERVOLTAGE WITH ±25V INPUTM A X 4533 t o c 115µs/divTypical Operating Characteristics (continued)(V+ = +15V, V- = -15V, T A = +25°C, unless otherwise noted.)COM_(10V/div)NO_ or NC_(10V/div)OVOVFAULT-FREE SIGNAL WITH ±15V INPUTM A X 4533 t o c 125µs/div COM_(10V/div)NO_ or NC_(10V/div)OVOVFAULT RECOVERY TIMEM A X 4533 t o c 132µs/divM A X 4533Quad, Rail-to-Rail, Fault-Protected,SPDT Analog Switch 8_______________________________________________________________________________________0-1000.010.11101001000FREQUENCY RESPONSE (DUAL SUPPLIES)-80-90-70FREQUENCY (MHz)R E S P O N S E (d B )-60-50-40-30-10-20Typical Operating Characteristics (continued)(V+ = +15V, V- = -15V, T A = +25°C, unless otherwise noted.)-1000.010.11101001000FREQUENCY RESPONSE (SINGLE SUPPLY)-80-90-70FREQUENCY (MHz)R E S P O N S E (d B )-60-50-40-30-10-20Pin DescriptionDetailed DescriptionThe MAX4533 is a fault-protected analog switch with special operation and construction. Traditional fault-pro-tected switches are constructed using three-series CMOS devices. This combination produces good fault protection but fairly high on-resistance when the signals are within about 3V of each supply rail. These series devices are not capable of handling signals up to the power-supply rails.The MAX4533 differs considerably from traditional fault-protected switches, with three advantages. First, it is constructed with two parallel FETs, allowing very low on-resistance when the switch is on. Second, they allow signals on the NC_ or NO_ pins that are within or slightlybeyond the supply rails to be passed through the switch to the COM_ terminal, allowing rail-to-rail signal opera-tion. Third, when a signal on NC_ or NO_ exceeds the supply rails by about 150mV (a fault condition), the volt-age on COM_ is limited to the appropriate polarity sup-ply voltage. Operation is identical for both fault polarities. The fault-protection extends to ±25V with power on and ±40V with power off.The MAX4533 has a parallel N-channel and P-channel MOSFET switch configuration with input voltage sensors.The simplified internal structure is shown in Figure 1. The parallel N1 and P1 MOSFETs form the switch element.N3 and P3 are sensor elements to sample the input volt-age and compare it against the power-supply rails.*When the voltage on NO_ or NC_ does not exceed V+ or V-, NO_ (or NC_) and COM_ pins are bidirectional.During normal operation of a conducting channel, N1and P1 remain on with a typical 125Ωon-resistance between NO_ (or NC_) and COM_. If the input voltage exceeds either supply rail by about 150mV, the parallel combination switches (N1, P1) are forced off through the driver and sensing circuitries. At the same time, the output (COM_ ) is clamped to the appropriate supply rail by the clamp circuitries (N2, P2). Two clamp circuits limit the output voltage to the supply voltages.For simplicity, Figure 1 shows only one side of the SPDT switch configuration. The complete circuit is composed of two channels with their outputs connected.Normal OperationTwo comparators continuously compare the voltage on the NO_ (or NC_ ) pin with V+ and V- supply voltages.When the signal on NO_ (or NC_ ) is between V+ and V-, the switch behaves normally, with FETs N1 and P1turning on and off in response to NO_ (or NC_) signals (Figure 1). For any voltage between the supply rails,the switch is bidirectional; therefore, COM_ and NC_(or NO_ ) are interchangeable. Only NO_ and NC_ can be exposed to overvoltages beyond the supply range and within the specified breakdown limits of the device.Fault ConditionThe MAX4533 protects devices connected to its output (COM_) through its unique fault-protection circuitry.When the input voltage is raised above either supply rail, the internal sense and comparator circuitries (N3and N-channel driver or P3 and P-channel driver) dis-connect the output (COM_) from the input (Figure 1).If the switch driven above the supply rail has an on state, the clamp circuitries (N2 or P2) connect the out-put to the appropriate supply rail. Table 1 summarizes the MAX4533’s operation under normal and fault condi-tions. Row 5 shows a negative fault condition when the supplies are on. It shows that with supplies of ±15V, if the input voltage is between -15V and -25V, the output (COM_) clamps to the negative supply rail of -15V.With this technique, the SPDT switch is capable of with-standing a worse-case condition of opposite fault polar-ities at its inputs.Transient Fault ConditionWhen a fast rising or falling transient on NO_ (or NC_)exceeds V+ or V-, the output (COM_) follows the input (IN_) to the supply rail by only a few nanoseconds. This delay is due to the switch on-resistance and circuit capacitance to ground. However, when the input tran-sient returns to within the supply rails there is a longer recovery time. For positive faults, the recovery time is typically 2.5µs. For negative faults, the recovery time is typically 1.3µs. These values depend on the COM_ out-put resistance and capacitance. The delays are not dependent on the fault amplitude. Higher COM_ output resistance and capacitance increase the recovery times.Fault Protection, Voltage, and Power OffThe maximum fault voltage on the NO_ or NC_ pins is ±40V from ground when the power is off. With ±15V sup-ply voltages, the highest voltage on NO_ (or NC_) can be +25V, and the lowest voltage on NO_ (or NC_) can be -25V. Exceeding these limits can damage the chip.IN_ Logic-Level ThresholdsThe logic-level thresholds are TTL/CMOS-compatible when V+ is +15V. Raising V+ increases the threshold slightly; when V+ reaches +25V, the level threshold is 2.8V—higher than the TTL output high-level minimum of 2.4V, but still compatible with CMOS outputs (see the Typical Operating Characteristics ).Increasing V- has no effect on the logic-level thresh-olds, but it does increase the gate-drive voltage to the signal FETs, reducing their on-resistance.MAX4533Quad, Rail-to-Rail, Fault-Protected,SPDT Analog Switch_______________________________________________________________________________________9Figure 1. Simplified Internal StructureFailure ModesThe MAX4533 is not a lightning arrester or surge pro-tector. Exceeding the fault-protection voltage limits on NO_ or NC_, even for very short periods, can cause the device to fail.Applications InformationGroundThere is no connection between the analog signal paths and GND. The analog signal paths consist of an N-channel and P-channel MOSFET with their sources and drains paralleled and their gates driven out of phase to V+ and V- by the logic-level translators.V+ and GND power the internal logic and logic-level translators and set the input logic thresholds. The logic-level translators convert the logic levels to switched V+and V- signals to drive the gates of the switches. Thisdrive signal is the only connection between the power supplies and the analog signals. GND, IN_, and COM_have ESD protection diodes to V+ and V-.Supply Current ReductionWhen the logic signals are driven rail-to-rail from 0 to +12V or -15V to +15V, the supply current reduces to approximately half of the supply current when the logic input levels are at 0 to 5V.Power SuppliesThe MAX4533 operates with bipolar supplies between ±4.5V and ±18V. The V+ and V- supplies need not be symmetrical, but their difference can not exceed the absolute maximum rating of +44V. The MAX4533 oper-ates from a single supply between +9V and +36V when V- is connected to GND.M A X 4533Quad, Rail-to-Rail, Fault-Protected,SPDT Analog Switch 10______________________________________________________________________________________Table 1. Switch States in Normal and Fault ConditionsTest Circuits/Timing DiagramsFigure 2. Switching-Time Test CircuitMAX4533Quad, Rail-to-Rail, Fault-Protected,SPDT Analog Switch______________________________________________________________________________________11Test Circuits/Timing Diagrams (continued)Figure 3. Break-Before-MakeFigure 4. Charge InjectionFigure 5. COM_, NO_, NC_ CapacitanceM A X 4533Quad, Rail-to-Rail, Fault-Protected,SPDT Analog Switch Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.12____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©1999 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.Test Circuits/Timing Diagrams (continued)Figure 6. Frequency Response, Off-Isolation, and CrosstalkOrdering Information (continued)Chip InformationTRANSISTOR COUNT: 448。

MAXIM 化数字电位器MAX5481, MAX5482, MAX5483, MAX548 说明书

ENGLISH•简体中文•日本語•概述状况状况：生产中。

下载Notes MAX5481Linear13-WireSerial SPINon-Volatile102410253519.6$1.95@1kMAX548250$1.95 @1kMAX548310$1.95 @1kMAX548450$1.95 @1k查看所有Digital Potentiometers (128)引脚配置相关产品MAX5494,MAX5495,MAX5496, ...10位、双路、非易失、线性变化数字电位器类似产品：浏览其它类似产品线查看所有Digital Potentiometers (128产品)顶标MAX5481顶标MAX5482顶标MAX5483顶标MAX5484新品发布[ 2005-08-03 ]应用工程师帮助选型，下个工作日回复参数搜索应用帮助概述技术文档定购信息概述关键特性应用/使用关键指标图表注释、注解相关产品数据资料应用笔记评估板设计指南可靠性报告软件/模型价格与供货样品在线订购封装信息无铅信息参考文献： 19-3708 Rev. 4; 2008-03-12本页最后一次更新: 2008-03-27联络我们：信息反馈、提出问题 • 对该网页的评价 • 发送本网页 • 隐私权政策 • 法律声明 © 2010 Maxim Integrated Products版权所有General DescriptionThe MAX5481–MAX5484 10-bit (1024-tap) nonvolatile,linear-taper, programmable voltage-dividers and vari-able resistors perform the function of a mechanical potentiometer, but replace the mechanics with a pin-configurable 3-wire serial SPI™-compatible interface or up/down digital interface. The MAX5481/MAX5482 are 3-terminal voltage-dividers and the MAX5483/MAX5484are 2-terminal variable resistors.The MAX5481–MAX5484 feature an internal, non-volatile, electrically erasable programmable read-only memory (EEPROM) that stores the wiper position for ini-tialization during power-up. The 3-wire SPI-compatible serial interface allows communication at data rates up to 7MHz. A pin-selectable up/down digital interface is also available.The MAX5481–MAX5484 are ideal for applications requiring digitally controlled potentiometers. Two end-to-end resistance values are available (10k Ωand 50k Ω) in a voltage-divider or a variable-resistor configuration (see the Selector G uide ). The nominal resistor temperature coefficient is 35ppm/°C end-to-end, and only 5ppm/°C ratiometric, making these devices ideal for applications requiring low-temperature-coefficient voltage-dividers,such as low-drift, programmable gain-amplifiers.The MAX5481–MAX5484 operate with either a +2.7V to +5.25V single power supply or ±2.5V dual power sup-plies. These devices consume 400µA (max) of supply current when writing data to the nonvolatile memory and 1.0µA (max) of standby supply current. The MAX5481–MAX5484 are available in a space-saving (3mm x 3mm), 16-pin TQFN, or a 14-pin TSSOP pack-age and are specified over the extended (-40°C to +85°C) temperature range.ApplicationsFeatures♦1024 Tap Positions♦Power-On Recall of Wiper Position from Nonvolatile Memory♦16-Pin (3mm x 3mm x 0.8mm) TQFN or 14-Pin TSSOP Package♦35ppm/°C End-to-End Resistance Temperature Coefficient♦5ppm/°C Ratiometric Temperature Coefficient ♦10kΩand 50kΩEnd-to-End Resistor Values♦Pin-Selectable SPI-Compatible Serial Interface or Up/Down Digital Interface ♦1µA (max) Standby Current♦Single +2.7V to +5.25V Supply Operation ♦Dual ±2.5V Supply OperationMAX5481–MAX548410-Bit, Nonvolatile, Linear-Taper DigitalPotentiometers________________________________________________________________Maxim Integrated Products1Ordering InformationPin Configurations19-3708; Rev 5; 4/10For pricing delivery, and ordering information please contact Maxim Direct at 1-888-629-4642,or visit Maxim’s website at .Selector Guide appears at end of data sheet.SPI is a trademark of Motorola, Inc.temperature range.+Denotes a lead(Pb)-free/RoHS-compliant package.*EP = Exposed pad.Ordering Information continued at end of data sheet.Gain and Offset AdjustmentLCD Contrast Adjustment Pressure SensorsLow-Drift Programmable Gain AmplifiersMechanical Potentiometer ReplacementM A X 5481–M A X 548410-Bit, Nonvolatile, Linear-Taper Digital PotentiometersABSOLUTE MAXIMUM RATINGSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.V DD to GND...........................................................-0.3V to +6.0V V SS to GND............................................................-3.5V to +0.3V V DD to V SS .............................................................-0.3V to +6.0V H, L, W to V SS ..................................(V SS - 0.3V) to (V DD + 0.3V)CS , SCLK(INC ), DIN(U/D ), SPI/UD to GND..-0.3V to (V DD + 0.3V)Maximum Continuous Current into H, L, and WMAX5481/MAX5483.........................................................±5mA MAX5482/MAX5484......................................................±1.0mA Maximum Current into Any Other Pin...............................±50mAContinuous Power Dissipation (T A = +70°C)16-Pin TQFN (derate 17.5mW/°C above +70°C).....1398.6mW 14-Pin TSSOP (derate 9.1mW/°C above +70°C)..........727mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-60°C to +150°C Lead Temperature (soldering, 10s).................................+300°C Soldering Temperature (reflow).......................................+260°CELECTRICAL CHARACTERISTICSMAX5481–MAX548410-Bit, Nonvolatile, Linear-Taper DigitalPotentiometers_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS (continued)(V DD = +2.7V to +5.25V, V SS = V GND = 0V, V H = V DD , V L = 0V, T A = -40°C to +85°C, unless otherwise noted. Typical values are at V DD = +5.0V, T A = +25°C, unless otherwise noted.) (Note 1)M A X 5481–M A X 548410-Bit, Nonvolatile, Linear-Taper Digital Potentiometers 4_______________________________________________________________________________________TIMING CHARACTERISTICSNote 2:The DNL and INL are measured with the device configured as a voltage-divider with H = V DD and L = V SS . The wiper termi-nal (W) is unloaded and measured with a high-input-impedance voltmeter.Note 3:The DNL_R and INL_R are measured with D.N.C. unconnected and L = V SS = 0V. For V DD = +5V, the wiper terminal is dri-ven with a source current of I W = 80µA for the 50k Ωdevice and 400µA for the 10k Ωdevice. For V DD = +3V, the wiper termi-nal is driven with a source current of 40µA for the 50k Ωdevice and 200µA for the 10k Ωdevice.Note 4:The wiper resistance is measured using the source currents given in Note 3.Note 5:The device draws higher supply current when the digital inputs are driven with voltages between (V DD - 0.5V) and (V GND +0.5V). See Supply Current vs. Digital Input Voltage in the Typical Operating Characteristics .Note 6:Wiper settling test condition uses the voltage-divider configuration with a 10pF load on W. Transition code from 00000 00000to 01111 01111 and measure the time from CS going high to the wiper voltage settling to within 0.5% of its final value.MAX5481–MAX548410-Bit, Nonvolatile, Linear-Taper DigitalPotentiometers_______________________________________________________________________________________5-1.0-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024DNL vs. CODE (MAX5483)CODED N L (L S B )V DD = 2.7V-1.0-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024DNL vs. CODE (MAX5483)CODED N L (L S B )V DD = 5V-2.0-1.0-1.50-0.50.51.01.5 2.0INL vs. CODE (MAX5483)I N L (L S B )V DD = 2.7V02563841285126407688961024CODE-2.0-1.0-1.50-0.50.51.01.5 2.0INL vs. CODE (MAX5483)I N L (L S B )V DD = 3V2563841285126407688961024CODE-2.0-1.0-1.50-0.50.51.01.5 2.0INL vs. CODE (MAX5483)I N L (L S B )V DD = 5V02563841285126407688961024CODE-1.0-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024DNL vs. CODE (MAX5481)CODED N L (L S B )-1.0-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024DNL vs. CODE (MAX5481)CODED N L (L S B )V DD = 5V-1.0-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024INL vs. CODE (MAX5481)CODEI N L (L S B )-1.0-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024INL vs. CODE (MAX5481)CODEI N L (L S B )Typical Operating Characteristics(V DD = 5.0V, V SS = 0V, T A = +25°C, unless otherwise noted.)M A X 5481–M A X 548410-Bit, Nonvolatile, Linear-Taper Digital Potentiometers 6_______________________________________________________________________________________-1.0-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024DNL vs. CODE (MAX5484)CODED N L (L S B )-1.0-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024DNL vs. CODE (MAX5484)CODED N L (L S B )-1.0-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024INL vs. CODE (MAX5484)CODEI N L (L S B )-1.0-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024INL vs. CODE (MAX5484)CODEI N L (L S B )-1.0-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024DNL vs. CODE (MAX5482)CODED N L (L S B )-1.0-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024DNL vs. CODE (MAX5482)CODED N L (L S B )-1.0-0.6-0.8-0.2-0.40.200.40.80.61.002563841285126407688961024INL vs. CODE (MAX5482)CODEI N L (L S B )V DD = 2.7V-1.0-0.6-0.8-0.2-0.40.200.40.80.61.02563841285126407688961024INL vs. CODE (MAX5482)CODEI N L (L S B )V DD = 5V02010403050607080WIPER RESISTANCE vs. CODE (VARIABLE RESISTOR, T A = -40°C)M A X 5481 t o c 18R W (Ω)2563841285126407688961024CODETypical Operating Characteristics (continued)(V DD = 5.0V, V SS = 0V, T A = +25°C, unless otherwise noted.)MAX5481–MAX5484Typical Operating Characteristics (continued)(V DD = 5.0V, V SS = 0V, T A = +25°C, unless otherwise noted.)10-Bit, Nonvolatile, Linear-Taper DigitalPotentiometers_______________________________________________________________________________________702010403050607080WIPER RESISTANCE vs. CODE (VARIABLE RESISTOR, T A = +25°C)M A X 5481 t oc 19R W (Ω)2563841285126407688961024CODE2010403050607080WIPER RESISTANCE vs. CODE (VARIABLE RESISTOR, T A = +85°C)M A X 5481 t o c 20R W (Ω)2563841285126407688961024CODE10302050604070W-TO-L RESISTANCE vs. CODE(MAX5484)R W L (k Ω)02563841285126407688961024CODE02641012814W-TO-L RESISTANCE vs. CODE(MAX5483)R W L (k Ω)2563841285126407688961024CODE18.018.519.019.520.020.521.021.522.0012345WIPER RESISTANCE vs. WIPER VOLTAGE(VARIABLE RESISTOR)WIPER VOLTAGE (V)R W (Ω)-2.0-1.5-1.0-0.500.51.01.52.0-40-1510356085END-TO-END (R HL ) % CHANGE vs. TEMPERATURE (VOLTAGE-DIVIDER)M A X 5481 t o c 24TEMPERATURE (°C)E N D -T O -E N D R E S I S T A N C E C H A N G E (%)-2.0-1.5-1.0-0.500.51.01.52.0-40-1510356085WIPER-TO-END RESISTANCE (R WL ) % CHANGE vs. TEMPERATURE (VARIABLE RESISTOR)TEMPERATURE (°C)W I P E R -T O -E N D R E S I S T A N C E C H A N G E (%)00.30.90.61.21.5-4010-15356085STANDBY SUPPLY CURRENTvs. TEMPERATURETEMPERATURE (°C)I D D (μA )DIGITAL SUPPLY CURRENT vs. DIGITAL INPUT VOLTAGEDIGITAL INPUT VOLTAGE (V)I D D (μA )4.54.03.53.02.52.01.51.00.5110100100010,0000.15.0M A X 5481–M A X 548410-Bit, Nonvolatile, Linear-Taper Digital Potentiometers Typical Operating Characteristics (continued)(Circuit of Figure 1, T A = +25°C, unless otherwise noted.)1μs/divTAP-TO-TAP SWITCHING TRANSIENTRESPONSE (MAX5481)V W(AC-COUPLED)20mV/divCS 2V/divH = V DD , L = GND C W = 10pFFROM CODE 01 1111 1111TO CODE 10 0000 00004μs/divTAP-TO-TAP SWITCHING TRANSIENTRESPONSE (MAX5482)V W(AC-COUPLED)20mV/divCS 2V/divH = V DD , L = GND C W = 10pFFROM CODE 01 1111 1111TO CODE 10 0000 0000WIPER RESPONSE vs. FREQUENCY(MAX5481)FREQUENCY (kHz)G A I N (d B )100101-20-15-10-5-250.11000WIPER RESPONSE vs. FREQUENCY(MAX5482)FREQUENCY (kHz)G A I N (d B )100101-20-15-10-50-250.11000THD+N vs. FREQUENCY(MAX5481)FREQUENCY (kHz)T H D +N (%)1010.10.0010.010.11100.00010.01100THD+N vs. FREQUENCY(MAX5482)FREQUENCY (kHz)T H D +N (%)1010.10.0010.010.11100.00010.0110004020806012010014018016020002563841285126407688961024RATIOMETRIC TEMPERATURE COEFFICIENT vs. CODECODER A T I O M E T R I C T E M P C O (p p m )100300200500600400700VARIABLE-RESISTOR TEMPERATURECOEFFICIENT vs. CODET C V R (p p m )02563841285126407688961024CODE10-Bit, Nonvolatile, Linear-Taper DigitalPotentiometersPin DescriptionMAX5481–MAX5484M A X 5481–M A X 548410-Bit, Nonvolatile, Linear-Taper Digital Potentiometers Pin Description (continued)(MAX5483/MAX5484 Variable Resistors)MAX5481–MAX548410-Bit, Nonvolatile, Linear-Taper DigitalPotentiometersFunctional DiagramsM A X 5481–M A X 548410-Bit, Nonvolatile, Linear-Taper Digital Potentiometers Detailed DescriptionThe MAX5481/MAX5482 linear programmable voltage-dividers and the MAX5483/MAX5484 variable resistors feature 1024 tap points (10-bit resolution) (see the Functional Diagrams ). These devices consist of multi-ple strings of equal resistor segments with a wiper con-tact that moves among the 1024 points through a pin-selectable 3-wire SPI-compatible serial interface or up/down interface. The MAX5481/MAX5483 provide a total end-to-end resistance of 10k Ω, and the MAX5482/MAX5484 have an end-to-end resistance of 50k Ω. The MAX5481/MAX5482 allow access to the high, low, and wiper terminals for a standard voltage-divider configuration.MAX5481/MAX5482 ProgrammableVoltage-DividersThe MAX5481/MAX5482 programmable voltage-dividers provide a weighted average of the voltage between the H and L inputs at the W output. Both devices feature 10-bit resolution and provide up to 1024 tap points between the H and L voltages. Ideally,the V L voltage occurs at the wiper terminal (W) when all data bits are zero and the V H voltage occurs at the wiper terminal when all data bits are one. The step size (1 LSB) voltage is equal to the voltage applied across terminals H and L divided by 210. Calculate the wiper voltage V Was follows:Functional Diagrams (continued)MAX5481–MAX548410-Bit, Nonvolatile, Linear-Taper DigitalPotentiometerswhere D is the decimal equivalent of the 10 data bits writ-ten (0 to 1023), V HL is the voltage difference between the H and L terminals:The MAX5481 includes a total end-to-end resistance value of 10k Ωwhile the MAX5482 features an end-to-end resistance value of 50k Ω. These devices are not intended to be used as a variable resistor . Wiper cur-rent creates a nonlinear voltage drop in series with the wiper. To ensure temperature drift remains within speci-fications, do not pull current through the voltage-divider wiper. Connect the wiper to a high-impedance node.Figures 1 and 2 show the behavior of the MAX5481’s resistance from W to H and from W to L. This does not apply to the variable-resistor devicesMAX5483/MAX5484 Variable ResistorsThe MAX5483/MAX5484 provide a programmable resistance between W and L. The MAX5483 features a total end-to-end resistance value of 10k Ω, while the MAX5484 provides an end-to-end resistance value of 50k Ω. The programmable resolution of this resistance is equal to the nominal end-to-end resistance divided by 1024 (10-bit resolution). For example, each nominal segment resistance is 9.8Ωand 48.8Ωfor the MAX5483and the MAX5484, respectively.wiper position from the 1024 possible positions, result-ing in 1024 values for the resistance from W to L.Calculate the resistance from W to L (R WL ) by using the where D is decimal equivalent of the 10 data bits writ-ten, R W-L is the nominal end-to-end resistance, and R Z is the zero-scale error. Table 1 shows the values of R WL at selected codes for the MAX5483/MAX5484.Digital InterfaceConfigure the MAX5481–MAX5484 by a pin-selectable,3-wire, SPI-compatible serial data interface or an up/down interface. Drive SPI/UD high to select the 3-wire SPI-compatible interface. Pull SPI/UD low to select the up/down interface.V FSE V andV ZSE V FSE HL ZSE HL =⎡⎣⎢⎤⎦⎥=⎡⎣⎢⎤⎦⎥10241024,Figure 1. Resistance from W to H vs. Code (10k ΩVoltage-Divider)Figure 2. Resistance from W to L vs. Code (10k ΩVoltage-Divider)M A X 5481–M A X 548410-Bit, Nonvolatile, Linear-Taper Digital Potentiometers SPI-Compatible Serial InterfaceDrive SPI/UD high to enable the 3-wire SPI-compatible serial interface (see Figure 3). This write-only interface contains three inputs: chip select (CS ), data in (DIN(U/D )), and data clock (SCLK(INC )). Drive CS low to load the data at DIN(U/D ) synchronously into the shift register on each SCLK(INC ) rising edge.The WRITE command (C1, C0 = 00) requires 24 clock cycles to transfer the command and data (Figure 4a).The COPY commands (C1, C0 = 10 or 11) use either eight clock cycles to transfer the command bits (Figure 4b) or 24 clock cycles with the last 16 data bits disre-garded by the device.After loading the data into the shift register, drive CS high to latch the data into the appropriate control regis-ter. Keep CS low during the entire serial data stream to avoid corruption of the data. Table 2 shows the com-mand decoding.Write Wiper RegisterData written to this register (C1, C0 = 00) controls the wiper position. The 10 data bits (D9–D0) indicate the position of the wiper. For example, if DIN(U/D ) = 00 00000000, the wiper moves to the position closest to L. If DIN(U/D ) = 11 1111 1111, the wiper moves closest to H.This command writes data to the volatile random access memory (RAM), leaving the NV register unchanged. When the device powers up, the data stored in the NV register transfers to the wiper register,moving the wiper to the stored position. Figure 5 shows how to write data to the wiper register.Table 2. Command Decoding*X = Don’t care.Figure 3. SPI-Compatible Serial-Interface Timing Diagram (SPI/UD = 1)10-Bit, Nonvolatile, Linear-Taper DigitalPotentiometers ArrayMAX5481–MAX5484Figure4. Serial SPI-Compatible Interface FormatFigure5. Write Wiper Register OperationM A X 5481–M A X 548410-Bit, Nonvolatile, Linear-Taper Digital Potentiometers Copy Wiper Register to NV RegisterThe copy wiper register to NV register command (C1,C0 = 10) stores the current position of the wiper to the NV register for use at power-up. Figure 6 shows how to copy data from wiper register to NV register. The oper-ation takes up to 12ms (max) after CS goes high to complete and no other operation should be performed until completion.Copy NV Register to Wiper RegisterThe copy NV register to wiper register (C1, C0 = 11)restores the wiper position to the current value stored in the NV register. Figure 7 shows how to copy data from the NV register to the wiper register.Digital Up/Down InterfaceFigure 8 illustrates an up/down serial-interface timing diagram. In digital up/down interface mode (SPI/UD =0), the logic inputs CS , DIN(U/D ), and SCLK(INC ) con-trol the wiper position and store it in nonvolatile memory (see Table 3). The chip-select (CS ) input enables the serial interface when low and disables the interface when high. The position of the wiper is stored in the nonvolatile register when CS transitions from low to high while SCLK(INC ) is high.When the serial interface is active (CS low), a high-to-low (falling edge) transition on SCLK(INC ) increments or decrements the internal 10-bit counter depending on the state of DIN(U/D ). If DIN(U/D ) is high, the wiper increments. If DIN(U/D ) is low, the wiper decrements.The device stores the value of the wiper position in the nonvolatile memory when CS transitions from low to high while SCLK(INC ) is high. The host system can disablethe serial interface and deselect the device without stor-ing the latest wiper position in the nonvolatile memory by keeping SCLK(INC ) low while taking CS high.Upon power-up, the MAX5481–MAX5484 load the value of nonvolatile memory into the wiper register, and set the wiper position to the value last stored.Figure 6. Copy Wiper Register to NV Register OperationFigure 7. Copy NV Register to Wiper Register OperationMAX5481–MAX548410-Bit, Nonvolatile, Linear-Taper DigitalPotentiometersStandby ModeThe MAX5481–MAX5484 feature a low-power standby mode. When the device is not being programmed, it enters into standby mode and supply current drops to 0.5µA (typ).Nonvolatile MemoryThe internal EEPROM consists of a nonvolatile register that retains the last value stored prior to power-down.The nonvolatile register is programmed to midscale at the factory. The nonvolatile memory is guaranteed for 50 years of wiper data retention and up to 200,000wiper write cycles.Power-UpUpon power-up, the MAX5481–MAX5484 load the data stored in the nonvolatile wiper register into the volatile wiper register, updating the wiper position with the data stored in the nonvolatile wiper register.Applications InformationThe MAX5481–MAX5484 are ideal for circuits requiring digitally controlled adjustable resistance, such as LCD contrast control (where voltage biasing adjusts the dis-play contrast), or programmable filters with adjustable gain and/or cutoff frequency.Positive LCD Bias ControlFigures 9 and 10 show an application where a voltage-divider or a variable resistor is used to make an adjustable, positive LCD-bias voltage. The op amp pro-vides buffering and gain to the voltage-divider network made by the programmable voltage-divider (Figure 9) or to a fixed resistor and a variable resistor (see Figure 10).Programmable Gain and Offset AdjustmentFigure 11 shows an application where a voltage-divider and a variable resistor are used to make a programma-ble gain and offset adjustment.Figure 8. Up/Down Serial-Interface Timing Diagram (SPI/UD = 0)M A X 5481–M A X 548410-Bit, Nonvolatile, Linear-Taper Digital Potentiometers 18______________________________________________________________________________________Programmable FilterFigure 12 shows the configuration for a 1st-order pro-grammable filter using two variable resistors. Adjust R2for the gain and adjust R3 for the cutoff frequency. Use the following equations to estimate the gain (G) and the 3dB cutoff frequency (f C):Figure 10. Positive LCD Bias Control Using a Variable ResistorFigure 12. Programmable FilterFigure 11. Programmable Gain/Offset AdjustmentFigure 9. Positive LCD Bias Control Using a Voltage-DividerMAX5481–MAX548410-Bit, Nonvolatile, Linear-Taper DigitalPotentiometers______________________________________________________________________________________19Chip InformationPROCESS: BiCMOSSelector GuidePin Configurations (continued)Ordering Information (continued)Note: All devices are specified over the -40°C to +85°C operating temperature range.+Denotes a lead(Pb)-free/RoHS-compliant package.*EP = Exposed pad.Package InformationFor the latest package outline information and land patterns, go to /packages . Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package draw-ings may show a different suffix character, but the drawing per-tains to the package regardless of RoHS status.M A X 5481–M A X 548410-Bit, Nonvolatile, Linear-Taper Digital Potentiometers Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.20____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2010 Maxim Integrated ProductsMaxim is a registered trademark of Maxim Integrated Products, Inc.。

TPS54231中文资料

2A, 28V INPUT, STEP DOWN SWIFT™ DC/DC CONVERTER WITH ECO-MODE™
FEATURES
1
•2 3.5V to 28V Input Voltage Range • Adjustable Output Voltage Down to 0.8V • Integrated 80 mΩ High Side MOSFET Supports
2
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS(1)
over operating free-air temperature range (unless otherwise noted)
VIN
ENInput VolFra bibliotekageBOOT VSENSE

MAX5420BEUA-T中文资料

RATIO ACCURACY (%) MAX5420/21 toc02
RATIO ACCURACY (%) MAX5420/21 toc03
Typical Operating Characteristics
元器件交易网
19-2230; Rev 2; 2/05
MAX5420/MAX5421
Digitally Programmable Precision Voltage Divider for PGAs
General Description
The MAX5420 and MAX5421 are digitally programmable precision voltage dividers optimized for use in digitally programmable gain amplifier configurations. The MAX5420/ MAX5421 operate from a single +5V supply or dual ±5V supply, and consume only 3µA supply current. These devices consist of a digitally selectable resistor array that provides four precision noninverting gains of 1, 2, 4, and 8 for PGAs. The MAX5420 and MAX5421 achieve a resistor ratio accuracy of 0.025% (MAX542_A), 0.09% (MAX542_B), and 0.5% (MAX542_C). The MAX5421 includes an on-chip matching resistor for op amp bias-current compensation.

MAS3132E中文资料

元器件交易网
Switching Diodes
MAS3132E
Silicon epitaxial planar type
Unit: mm
For high-speed switching circuits ■ Features
• Two elements are contained in one package, allowing highdensity mounting • Short reverse recovery time trr • Small terminal capacitance Ct
0.33+0.05 –0.02 3
0.10+0.05 –0.02
(0.40) (0.40) 0.80±0.05 1.20±0.05 5˚
0 to 0.01
Parameter Reverse voltage Maximum peak reverse voltage Forward current Single Double Peak forward current Single Double Non-repetitive peak forward surge current
1
2
■ Electrical Characteristics Ta = 25°C ± 3°C
Parameter Forward voltage Reverse voltage Reverse current Terminal capacitance Reverse recovery time
*
Symbol VF VR IR Ct trr IR = 100 µA VR = 75 V
1
元器件交易网
MAS3132E

ESD5423B Datasheet

o
ESD clamping (+8kV contact discharge per IEC61000-4-2)
ESD clamping (-8kV contact discharge per IEC61000-4-2)
20 18 16 14 12 10 8 6 4 2 0 -2
TLP current (A)
I/O to I/O
0
5
10
15
20
25
0.4
0
1
2
3
4
5
IPP - Peak pБайду номын сангаасlse current (A)
VR - Reverse voltage (V)
Clamping voltage vs. Peak pulse current
10000
Capacitance vs. Reverse voltage
VFC VF
V
IPP
Definitions of electrical characteristics
Will Semiconductor Ltd.
2
Revision 1.1, 2017/02/13
ESD5423B
Electrical characteristics (TA = 25 C, unless otherwise noted)
Power derating vs. Ambient temperature
Will Semiconductor Ltd.
4
Revision 1.1, 2017/02/13
ESD5423B
Typical characteristics (TA = 25 C, unless otherwise noted)

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PART
MAX5422ETA MAX5423ETA MAX5424ETA *EP = Exposed pad.
TEMP RANGE
-40°C to +85°C -40°C to +85°C -40°C to +85°C
END-TO-END RESISTANCE (kΩ)
50 100 200
PIN-PACKAGE
元器件交易网
MAX5422/MAX5423/MAX5424
256-Tap, Nonvolatile, SPI-Interface, Digital Potentiometers
ABSOLUTE MAXIMUM RATINGS
VDD to GND ...........................................................-0.3V to +6.0V All Other Pins to GND.................................-0.3V to (VDD + 0.3V) Maximum Continuous Current into H, L, and W
PARAMETER
SYMBOL
DC PERFORMANCE (VOLTAGE-DIVIDER MODE)
Resolution Integral Nonlinearity
N INL (Note 1)
Differential Nonlinearity
DNL (Note 1)
End-to-End Resistance Temperature Coefficient
The devices feature an internal, nonvolatile EEPROM used to store the wiper position for initialization during power-up. The 3-wire SPI-compatible serial interface allows communication at data rates up to 5MHz, minimizing board space and reducing interconnection complexity in many applications.
The MAX5422/MAX5423/MAX5424 are available in a 3mm x 3mm 8-pin TDFN package, and are specified over the extended -40°C to +85°C temperature range.
Applications
The MAX5422/MAX5423/MAX5424 nonvolatile, lineartaper, digital potentiometers perform the function of a mechanical potentiometer, but replace the mechanics with a simple 3-wire SPI™-compatible digital interface. Each device performs the same function as a discrete potentiometer or variable resistor and has 256 tap points.
Coefficient ♦ 5ppm/°C Ratiometric Temperature Coefficient ♦ 50kΩ, 100kΩ, and 200kΩ Resistor Values ♦ 5MHz SPI-Compatible Serial Interface ♦ 500nA (typ) Static Supply Current ♦ Single-Supply Operation: +2.7V to +5.25V ♦ 256 Tap Positions ♦ ±0.5 LSB DNL in Voltage-Divider Mode ♦ ±0.5 LSB INL in Voltage-Divider Mode
♦ Wiper Position Stored in Nonvolatile Memory (EEPROM) and Recalled Upon Power-Up or Interface Command
♦ 3mm x 3mm x 0.8mm TDFN Package ♦ 35ppm/°C End-to-End Resistance Temperature
The MAX5422/MAX5423/MAX5424 provide three nominal resistance values: 50kΩ (MAX5422), 100kΩ (MAX5423), or 200kΩ (MAX5424). The nominal resistor temperature coefficient is 35ppm/°C end-to-end and only 5ppm/°C ratiometric. This makes the devices ideal for applications requiring a low-temperature-coefficient variable resistor, such as low-drift, programmable gainamplifier circuit configurations.
SPI is a trademark of Motorola, Inc.
TOP VIEW
Pin Configuration
VDD 1 SCLK 2
DIN 3 CS 4
MAX5422 MAX5423 MAX5424
8H 7W 6L 5 GND
TDFN (3mm x 3mm)
Ordering Information/Selector Guide
Continuous Power Dissipation (TA = +70°C) 8-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW
Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-60°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
TCR
CONDITIONS
MIN TYP MAX UNITS
256
Taps
±0.5 LSB
±0.5 LSB
35
ppm/°C
Ratiometric Resistance Temperature Coefficient
Full-Scale Error
MAX5422 MAX5423
MAX5424
MAX5422
MAX5422......................................................................±1.3mA MAX5423......................................................................±0.6mA MAX5424......................................................................±0.3mA
VDD = 3V, MAX5423
VDD = 3V, MAX5424
VDD = 5V DC PERFORMANCE (RESISTOR CHARACTERISTICS)
Mechanical Potentiometer Replacement
Low-Drift Programmable Gain Amplifiers
Audio Volume Control
Liquid-Crystal Display (LCD) Contrast Control
Low-Drift Programmable Filters
Functional Diagram
H
8-BIT 8
VDD
SHIFT
REGISTER
8-BIT 8 LATCH
256- 256 POSITION DECODER
W
GND
L
CS SCLKPOR NhomakorabeaSPI