OPA827中文资料

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各款运放音质比较评测

各款运放音质比较评测近段时间身边几个朋友玩了音响又开始迷上了摩机换运放，CD机、功放，连电脑上声卡也弄个827、275什么的。

所以周末，我特意花了点钱，去淘了堆运放（均为陶封）回来测试，简单谈谈感受吧。

NE5532NE5532：确实有点胆味，解析力一般，高频比较燥，低频比较糊且肥。

OP275：和5532比，胆性还重一点，解析力、低频、音场更好一点，可以买贴片的来打摩声卡用（特别是创新的），可以改善硬冷的数码声。

EL2244：音色中性，音场比较宽，高频还可以，中频音乐味差。

有人说解析力很高，其实是因为低频量感少，中频薄，高频显得突出而已。

要用好比较难。

OP275LT1057：两端延伸不错，速度、动态和解析力也挺好，就是属冷色调，放出的音乐好象有种不食人间烟火的味道，让你可以静静的听，却燃不起对音乐的那份激情。

AD827：延伸非常好，解析力高，高频华丽，中频纯厚，低频下潜和力度都不错，音场向前后左右拓展，有了凹凸感（这一点比其它运放强），速度快，动态好，感觉很大气，初换上此运放后确实有让人为之一振的感觉。

但久听之下，也发现很多问题：一、虽然三频段、音场很宽，气势足，大开大合，但总感觉结构有点松，不够紧凑；二、人声部份一般，有时大动态时，人声被配乐声淹没；三、不够细腻，属于激情有余而柔情不足；四、音乐味不够。

不过很多的人喜欢这种风格。

当然买两片来换换口味听还是可以的，按我的感觉，用在AV功放上看DVD大片应该很适合。

OPA2604：感觉象5532的升级版，各方面都有很大提高，解析力不错，音乐味更好，有胆味，声底属于较纯厚且有点刚性，综合素质很不错。

DY649：和2604比，解析力更好，高频部份纤细而又柔美且泛音丰富，声底没2604厚，很清澈、细致的感觉，音乐画面异常清晰，人声部份圆润通透、有种甜甜的感觉，人声（特别是女声）是它的强项。

OPA2604DY639：整体性稍弱于649，但更具备胆机特性，胆味更浓。

LTV827中文资料

260
*1. AC for 1 minute, R.H. = 40 ~ 60% Isolation voltage shall be measured using the following method. (1)Short between anode and cathode on the primary side and between collector, emitter and base on the secondary side. (2)The isolation voltage tester with zero-cross circuit shall be used. (3)The waveform of applied volttage shall be a sine wave.
potentials and impedances.
12-110
元器件交易网
Note: 1.Year date code. 2. 2-digit work week. 3. Factory code shall be marked (Z : Taiwan, Y : Thailand). 4.Rank shall be or shall not be marked. 5. All dimensions are in millimeters (inches). 6. Tolerance is 0.25mm (.010 ) unless otherwise noted. 7. Specifications are subject to change without notice.
Package
4-pin DIP 4-pin (leads with 0.4" spacing) 4-pin (lead bends for surface mount) 4-pin (tape and reel packaging of type I) 4-pin (tape and reel packaging of type II)

OP727中文资料

Symbol VOS
Conditions +25 ЊC < T A < +85 ЊC –40 °C < T A < +85 °C +25 ЊC < T A < +85 ЊC –40 °C < T A < +85 °C –40 °C < T A < +85 °C –40 °C < T A < +85 °C VCM = 0 V to 4 V RL = 10 k Ω , VO = 0.5 V to 4.5 V –40 °C < T A < +85 °C –40 °C < T A < +85 °C IL = 1 mA, –40 °C to +85 °C IL = 1 mA, –40 °C to +85 °C VDROPOUT < 1 V VS = 3 V to 30 V VO = 0 V –40 °C < T A < +85 °C VO = 0 V –40 °C < T A < +85 °C RL = 2 k Ω
Precision Micropower Single-Supply Operational Amplifiers OP777/OP727/OP747
FUNCTIONAL BLOCK DIAGRAMS 8-Lead MSOP (RM-8)
NC ؊IN ؉IN V؊ 1 8 NC V+ OUT NC
14-Lead SOIC (R-14)
Parameter INPUT CHARACTERISTICS Offset Voltage OP777 Offset Voltage OP727/OP747 Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift OP777 Offset Voltage Drift OP727/OP747 OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Output Circuit POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier OP777 Supply Current/Amplifier OP727/OP747 DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product NOISE PERFORMANCE Voltage Noise Voltage Noise Density Current Noise Density

1N827中文资料

1N821 to 1N829 1N821A to 1N829A
TYP. 6.20 − − − − − − − − − − − −
MAX. 6.51 96 48 19 9 5 0.01 0.005 0.002 0.001 V
UNIT
mV mV mV mV mV %/K %/K %/K %/K
0.0005 %/K 15 10 Ω Ω
元器件交易网
DISCRETE SEMICONDUCTORS
DATA SHEET
halfpage
M3D050
1N821 to 1N829 1N821A to 1N829A Voltage reference diodes
Product speciﬁcation Supersedes data of March 1991 1996 Mar 20
Philips Semiconductors
Product speciﬁcation
Voltage reference diodes
PACKAGE OUTLINE
1N821 to 1N829 1N821A to 1N829A
handbook, full pagewidth
0.55 max 1.6 max 25.4 min 3.04 max 25.4 min
MSA212 - 1
Dimensions in mm. The marking band indicates the cathode. The diodes are type branded.
Fig.5 SOD68 (DO-34).
DEFINITIONS Data Sheet Status Objective speciﬁcation Preliminary speciﬁcation Product speciﬁcation Limiting values Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the speciﬁcation is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the speciﬁcation. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. This data sheet contains target or goal speciﬁcations for product development. This data sheet contains preliminary data; supplementary data may be published later. This data sheet contains ﬁnal product speciﬁcations.

OPA2735AID中文资料

proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes couldFrequency (Hz)11k10k10100100k1s/divSAMPLING FREQUENCY vs TEMPERATUREV =12V504030SMALL−SIGNAL OVERSHOOT o o t (%)IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. T esting and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed.TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. T o minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards.TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation.Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions:Products ApplicationsAmplifiers Audio /audioData Converters Automotive /automotiveDSP Broadband /broadbandInterface Digital Control /digitalcontrolLogic Military /militaryPower Mgmt Optical Networking /opticalnetwork Microcontrollers Security /securityTelephony /telephonyVideo & Imaging /videoWireless /wirelessMailing Address:Texas InstrumentsPost Office Box 655303 Dallas, Texas 75265Copyright 2004, Texas Instruments Incorporated。

元器件opa227器件使用手册

FEATURES
DESCRIPTION
q LOW NOISE: 3nV/√Hz q WIDE BANDWIDTH:
OPA227: 8MHz, 2.3V/µs OPA228: 33MHz, 10V/µs q SETTLING TIME: 5µs (significant improvement over OP-27) q HIGH CMRR: 138dB q HIGH OPEN-LOOP GAIN: 160dB q LOW INPUT BIAS CURRENT: 10nA max q LOW OFFSET VOLTAGE: 75µV max q WIDE SUPPLY RANGE: ±2.5V to ±18V q OPA227 REPLACES OP-27, LT1007, MAX427 q OPA228 REPLACES OP-37, LT1037, MAX437 q SINGLE, DUAL, AND QUAD VERSIONS
OPA227PA, UA OPA2227PA, UA OPA4227PA, UA
MIN
TYP
MAX
±10
±200
±200
±0.3
±2
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OPA4227中文资料

DESCRIPTION
The OPA227 and OPA228 series op amps combine low noise and wide bandwidth with high precision to make them the ideal choice for applications requiring both ac and precision dc performance. The OPA227 is unity gain stable and features high slew rate (2.3V/µs) and wide bandwidth (8MHz). The OPA228 is optimized for closed-loop gains of 5 or greater, and offers higher speed with a slew rate of 10V/µs and a bandwidth of 33MHz. The OPA227 and OPA228 series op amps are ideal for professional audio equipment. In addition, low quiescent current and low cost make them ideal for portable applications requiring high precision. The OPA227 and OPA228 series op amps are pinfor-pin replacements for the industry standard OP-27 and OP-37 with substantial improvements across the board. The dual and quad versions are available for space savings and per-channel cost reduction. The OPA227, OPA228, OPA2227, and OPA2228 are available in DIP-8 and SO-8 packages. The OPA4227 and OPA4228 are available in DIP-14 and SO-14 packages with standard pin configurations. Operation is specified from –40°C to +85°C.

OPA192-中文资料

OPA192
高电压、轨到轨输入/输出，
高精度运算放大器，e-trim™ 系列特性
•低偏移电压：±5μV
•低偏移漂移：±0.2μV/’C
•低噪声：1kHz 时为5.5nV/√Hz
•宽带宽：10MHz GBW (G = 100)
•高转换率：20V/μs
•低静态电流：每个放大器为1mA
•轨到轨输入和输出
•宽电源范围：±2.25V 至±18V，+4.5V 至+36V
•已过滤电磁干扰(EMI) / 射频干扰(RFI) 的输入
•高共模抑制：140dB
•低偏置电流：±5pA
•达到电源轨的差分输入电压范围
•高电容负载驱动能力：1nF
应用范围
• 高分辨率模数转换器(ADC) 驱动器放大器
• 复用数据采集系统
• 逐次逼近寄存器(SAR) ADC 基准缓冲• 可编程逻辑控制器
• 测试和测量设备
• 高侧和低侧电流感测
• 高精度比较器
这种集成电路可以被静电损坏。

引脚图
开环增益和相位与频率
闭环增益和相位与频率
共模抑制比和电源电压抑制比与频率
输出阻抗。

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FEATURESDOFFSET: 250µV (max)DDRIFT: 1µV/°CDLOW NOISE: 4.5nV//Hz at 1kHzDBANDWIDTH: 18MHzDSLEW RATE: 22V/µsDBIAS CURRENT: 3pADQUIESCENT CURRENT: 4.5mA/ChDWIDE SUPPLY RANGE: +4V to +18VDSINGLE PACKAGES: MSOP-8, SO-8DDUAL PACKAGES: TSSOP-8, SO-8APPLICATIONSDPRECISION +10V INPUT FRONT-ENDSDTRANSIMPEDANCE AMPLIFIERSDINTEGRATORSDACTIVE FILTERSDA/D CONVERTER DRIVERSDDAC OUTPUT BUFFERSDHIGH-PERFORMANCE AUDIODPROCESS CONTROLDTEST EQUIPMENTDMEDICAL EQUIPMENTDESCRIPTIONThe OPA827 series of JFET operational amplifierscombines outstanding dc precision with excellent acperformance. It offers 100µV of offset, very low drift(1µV/°C) over temperature, low bias currents, and very lowflicker noise of 400nVPP (0.1Hz to 10Hz). It operates over

a very wide supply voltage range of ±4V to ±18V on a low4.5mA supply current. A dual version is also available forthe OPA827 family.

Excellent ac characteristics, such as 18MHz gainbandwidth (GBW) and 22V/µs slew rate, and precision dccharacteristics make the OPA827 series well-suited for awide range of applications such as 16- to 18-bit dataacquisition systems, transimpedance (I/V−conversion)amplifiers, filters, precision ±10V front-ends, andprofessional audio applications.

The single version (OPA827) is available in both MSOP-8and standard SO-8 surface-mount packages. The dualversion (OPA2827) is available in the small TSSOP-8 andin the standard SO-8 packages. All versions are specifiedfrom −40°C to +125°C.

VIN

AGND1REF

CAP

ADS8505

AGND2DGND500Ω200Ω

33.2kΩ

−15V

2.2µF100nF

2.2µF

100pFOPA827100pF500Ω+15V2.2µF100nFVIN

2.2µF

PRODUCT PREVIEWOPA827OPA2827

SBOS376A − NOVEMBER 2006Low-Noise, High-Precision, JFET-Input,

OPERATIONAL AMPLIFIER

www.ti.comCopyright  2006, Texas Instruments IncorporatedPlease be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstrumentssemiconductor products and disclaimers thereto appears at the end of this data sheet.All trademarks are the property of their respective owners.PRODUCT PREVIEW information concerns products in the formative or designphase of development. Characteristic data and other specifications are designgoals. Texas Instruments reserves the right to change or discontinue theseproducts without notice.

元器件交易网www.cecb2b.comOPA827SBOS376A − NOVEMBER 2006www.ti.com

2ABSOLUTE MAXIMUM RATINGS(1)Supply Voltage±20V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Signal Input Terminals, Voltage(2)(V−)−0.7 to (V+)+0.7V. . . . . . . . Current(2)±10mA. . . . . . . . . . . . . . . . . . . .

Differential Input VoltageTBD V. . . . . . . . . . . . . . . . . . . . . . . . . . . . Output Short-Circuit(3)Continuous. . . . . . . . . . . . . . . . . . . . . . . . . . Operating Temperature−55°C to +125°C. . . . . . . . . . . . . . . . . . . . . Storage Temperature−65°C to +150°C. . . . . . . . . . . . . . . . . . . . . . . Junction Temperature+150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (1)Stresses above these ratings may cause permanent damage.

Exposure to absolute maximum conditions for extended periodsmay degrade device reliability. These are stress ratings only, andfunctional operation of the device at these or any other conditionsbeyond those specified is not supported.(2)Input terminals are diode-clamped to the power-supply rails.

Input signals that can swing more than 0.7V beyond the supplyrails should be current-limited to 10mA or less.(3)Short-circuit to ground, one amplifier per package.

This integrated circuit can be damaged by ESD. TexasInstruments recommends that all integrated circuits behandled with appropriate precautions. Failure to observeproper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation tocomplete device failure. Precision integrated circuits may be moresusceptible to damage because very small parametric changes couldcause the device not to meet its published specifications.

PACKAGE/ORDERING INFORMATION(1)PRODUCTPACKAGE-LEADPACKAGE DESIGNATORPACKAGE MARKINGLow GradeSO-8DOPA827AOPA827AMSOP-8DGKTBD

SO-8DOPA2827AOPA2827ATSSOP-8PWTBD

High GradeSO-8DOPA827OPA827IMSOP-8DGKTBD

SO-8DOPA2827OPA2827ITSSOP-8PWTBD

(1)For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI web site

at www.ti.com.

PIN CONFIGURATIONS

12348765V+OUTB+INBOUTA+INAOPA2827TSSOP−8,SO−8AB12348765NC(1)V+OUTNC(1)NC(1)+INOPA827SO−8,MSOP−8(1)NCdenotesnointernalconnection.−IN−IN B−IN A