运算放大器的典型应用

OpAmp Circuit Collection AN-31Practical Differentiatorf c e12q R2C1f h e12q R1C1e12q R2C2f c m f h m f unity gainTL H 7057–9IntegratorV OUT e b1R1C1t2t1V IN dtf c e12q R1C1R1e R2For minimum offset error dueto input bias currentTL H 7057–10Fast IntegratorTL H 7057–11Current to Voltage ConverterV OUT e l IN R1For minimum error due tobias current R2e R1TL H 7057–12Circuit for Operating the LM101without a Negative SupplyTL H 7057–13Circuit for Generating theSecond Positive VoltageTL H 7057–14Neutralizing Input Capacitance to Optimize Response TimeC N s R1R2C STL H 7057–15 Integrator with Bias Current CompensationAdjust for zero integrator driftCurrent drift typically0 1 n A Cover b55 C to125 Ctemperature rangeTL H 7057–16 Voltage Comparator for DrivingDTL or TTL Integrated CircuitsTL H 7057–17 Threshold Detector for PhotodiodesTL H 7057–18Double-Ended Limit DetectorV OUT e4 6V forV LT s V IN s V UTV OUT e0V forV IN k V LT or V IN l V UTTL H 7057–19 Multiple Aperture Window DiscriminatorTL H 7057–20Offset Voltage Adjustment for Inverting AmplifiersUsing Any Type of Feedback Element RANGE e g VR2R1JTL H 7057–21Offset Voltage Adjustment for Non-Inverting AmplifiersUsing Any Type of Feedback ElementRANGE e g V R2R1JGAINe 1aR5R4a R2TL H 7057–22Offset Voltage Adjustment for Voltage Followers RANGE e g VR3R1JTL H 7057–23Offset Voltage Adjustment for Differential AmplifiersR2e R3a R4RANGE e g V R5R4J R1R1a R3JGAIN eR2R1TL H 7057–24Offset Voltage Adjustment for InvertingAmplifiers Using 10k X Source Resistance or LessR1e 2000R3U R4R4U R3s 10k X RANGE e g VR3U R4R1JTL H 7057–25SECTION2 SIGNAL GENERATIONLow Frequency Sine Wave Generator with Quadrature OutputTL H 7057–26 High Frequency Sine Wave Generator with Quadrature Outputf o e10kHzTL H 7057–27Free-Running Multivibrator Chosen for oscillation at 100HzTL H 7057–28Wein Bridge Sine Wave OscillatorR1e R2C1e C2 Eldema 1869f e12q R1C110V 14mA BulbTL H 7057–29Function GeneratorTL H 7057–30Pulse Width ModulatorTL H 7057–31Bilateral Current SourceI OUT e R3V IN R1R5R3e R4a R5R1e R2TL H 7057–32Bilateral Current SourceI OUT eR3V INR1R5R3e R4a R5R1e R2TL H 7057–33Wein Bridge Oscillator with FET Amplitude StabilizationR1e R2C1e C2f e12q R1C1TL H 7057–34Low Power Supply for Integrated Circuit TestingTL H 7057–35 V OUT e1V k XTL H 7057–91Positive Voltage ReferenceTL H 7057–36Positive Voltage ReferenceTL H 7057–37Negative Voltage Reference TL H 7057–38Negative Voltage ReferenceTL H 7057–39Precision Current Sink I O eV IN R1V IN t 0VTL H 7057–40Precision Current SourceTL H 7057–41SECTION 3 SIGNAL PROCESSINGDifferential-Input Instrumentation AmplifierR4R2e R5R3A V eR4R2TL H 7057–429Variable Gain Differential-Input Instrumentation AmplifierGain adjustA V e10b4R6TL H 7057–43 Instrumentation Amplifier with g100Volt Common Mode RangeR3e R4R1e R6e10R3A V e R7 R6Matching determines common R1e R5e10R2mode rejectionR2e R3TL H 7057–4410Instrumentation Amplifier with g10Volt Common Mode RangeR1e R4R2e R5R6e R7Matching Determines CMRRA V e R6R2 1a2R1R3JTL H 7057–45High Input Impedance Instrumentation AmplifierR1e R4 R2e R3A V e1a R1 R2Matching determines CMRRMay be deleted to maximize bandwidth TL H 7057–46Bridge Amplifier with Low Noise CompensationReduces feed through ofpower supply noise by20dBand makes supply bypassingunnecessaryTrim for best commonmode rejectionGain adjustTL H 7057–4711Bridge Amplifier R1R S1e R2R S2V OUT e V a1bR1R S1JTL H 7057–48Precision DiodeTL H 7057–49Precision Clamp E REF must have a source im-pedance of less than 200X if D2is usedTL H 7057–50Fast Half Wave RectifierTL H 7057–51Precision AC to DC ConverterFeedforward compensation can be used to make a fast full wave rectifier without a filter TL H 7057–52Low Drift Peak DetectorTL H 7057–5312Absolute Value Amplifier with Polarity Detector V OUT e b l V IN l c R2R1R2 R1eR4a R3R3TL H 7057–54Sample and HoldPolycarbonate-dielectric capacitorTL H 7057–55Sample and HoldWorst case drift less than2 5mV secTeflon Polyethylene or PolycarbonateDielectric CapacitorTL H 7057–5613Low Drift IntegratorTL H 7057–57Q1and Q3should not have internal gate-protection diodes Worst case drift less than 500m V sec over b 55 C to a 125 CFast Summing Amplifier with Low Input CurrentTL H 7057–58In addition to increasing speed the LM101A raises high and low frequency gain increases output drive capability and eliminates thermal feedbackPower Bandwidth 250kHzSmall Signal Bandwidth 3 5MHz Slew Rate 10V m sC5e6c 10b 8R f14Fast Integrator with Low Input CurrentTL H 7057–59Adjustable Q Notch Filterf O e12q R1C1e 60HzR1e R2e R3C1e C2e C23TL H 7057–6015Easily Tuned Notch Filter R4e R5R1e R3R4e R1f O e12q R40C1C2TL H 7057–61Tuned Circuitf O e12q0R1R2C1C2TL H 7057–62Two-Stage Tuned Circuitf O e12q0R1R2C1C2TL H 7057–6316Negative Capacitance MultiplierC e R2R3C1I L e V OS a R2I OSR3R S e R3(R1a R IN) R IN A VOTL H 7057–65Variable Capacitance MultiplierC e 1a R b R a J C1TL H 7057–66Simulated InductorL t R1R2C1R S e R2R P e R1TL H 7057–67Capacitance MultiplierC eR1R3C1I L eV OS a I OS R1R3R S e R3TL H 7057–68 17High Pass Active FilterTL H 7057–71Values are for100Hz cutoff Use metalized polycarbonate capacitors for good temperature stabilityLow Pass Active FilterTL H 7057–72 Values are for10kHz cutoff Use silvered mica capacitors for good temperature stabilityNonlinear Operational Amplifier with Temperature Compensated BreakpointsTL H 7057–7318Current MonitorV OUT e R1R3 R2I LTL H 7057–74Saturating Servo Preamplifier withRate FeedbackTL H 7057–75 Power BoosterTL H 7057–7619Analog MultiplierR5e R1 V b10JV1t0V OUT e V1V210TL H 7057–77Long Interval TimerLow leakage b0 017m F per second delayTL H 7057–78Fast Zero Crossing DetectorTL H 7057–79 Propagation delay approximately200nsDTL or TTL fanout of threeMinimize stray capacitancePin8Amplifier for Piezoelectric TransducerLow frequency cutoff e R1C1TL H 7057–80Temperature ProbeSet for0V at0 CAdjust for100mV CTL H 7057–81 20Photodiode AmplifierV OUT e R1I DTL H 7057–82Photodiode AmplifierV OUT e10V m ATL H 7057–83 Operating photodiode with less than3mVacross it eliminates leakage currentsHigh Input Impedance AC FollowerTL H 7057–84Temperature Compensated Logarithmic Converter1k X(g1%)at25 C a3500ppm CAvailable from Vishay UltronixGrand Junction CO Q81SeriesDetermines current for zerocrossing on output 10m Aas shownTL H 7057–8510nA k I IN k1mASensitivity is1V per decade21R o o t E x t r a c t o r2N 3728m a t c h e d p a i r sT L H 7057–8622Multiplier DividerTL H 7057–87 Cube GeneratorTL H 7057–8823A N -31O p A m p C i r c u i t C o l l e c t i o nFast Log Generator1k X (g 1%)at 25 C a 3500ppm CAvailable from Vishay Ultronix Grand Junction CO Q81SeriesTL H 7057–89Anti-Log Generator1k X (g 1%)at 25 C a 3500ppm CAvailable from Vishay Ultronix Grand Junction CO Q81SeriesTL H 7057–90LIFE SUPPORT POLICYNATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or 2 A critical component is any component of a life systems which (a)are intended for surgical implant support device or system whose failure to perform can into the body or (b)support or sustain life and whose be reasonably expected to cause the failure of the life failure to perform when properly used in accordance support device or system or to affect its safety or with instructions for use provided in the labeling can effectivenessbe reasonably expected to result in a significant injury to the userNational Semiconductor National Semiconductor National Semiconductor National Semiconductor CorporationEuropeHong Kong LtdJapan Ltd1111West Bardin RoadFax (a 49)0-180-530858613th Floor Straight Block Tel81-043-299-2309。