Ámplificador Operacional (Circuitos).
Op Amp Circuit Collection
National Semiconductor Application Note 31 September 2002
Note: National Semiconductor recommends replacing 2N2920 and 2N3728 matched pairs with LM394 in all application circuits.
Section 1—Basic Circuits
Inverting Amplifier Non-Inverting Amplifier
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Difference Amplifier
Inverting Summing Amplifier00705703 00705704
R5 = R1//R2//R3//R4 For minimum offset error due to input bias current
For minimum offset error due to input bias current
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© 2002 National Semiconductor Corporation
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Section 1—Basic Circuits
(Continued) Inverting Amplifier with High Input Impedance
Non-Inverting Summing Amplifier
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*RS = 1k for 1% accuracy00705706
*Source Impedance less than 100k gives less than 1% gain error.
Fast Inverting Amplifier with High Input Impedance
Non-Inverting AC Amplifier
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Section 1—Basic Circuits
Practical Differentiator
(Continued) Integrator
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For minimum offset error due to input bias current
Fast IntegratorCurrent to Voltage Converter
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VOUT = lIN R1 *For minimum error due to bias current R2 = R1
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Section 1—Basic Circuits
(Continued) Circuit for Generating the Second Positive Voltage
Circuit for Operating the LM101 without a Negative Supply
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Neutralizing Input Capacitance to Optimize Response Time
VoltageComparator for Driving DTL or TTL Integrated Circuits
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Threshold Detector for Photodiodes
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Integrator with Bias Current Compensation
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*Adjust for zero integrator drift. Current drift typically 0.1 n/A˚C over −55˚C to 125˚C temperature range.
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Section 1—Basic Circuits
(Continued) Double-Ended LimitDetector
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VOUT = 4.6V for VLT ≤ VIN ≤ VUT VOUT = 0V for VIN < VLT or VIN > VUT
Multiple Aperture Window Discriminator
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Section 1—Basic Circuits
(Continued) Offset Voltage Adjustment for Non-Inverting Amplifiers Using Any Type of Feedback Element
Offset Voltage Adjustment for Inverting Amplifiers Using Any Type of Feedback Element00705722
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Offset Voltage Adjustment for Voltage Followers
Offset Voltage Adjustment for Differential Amplifiers
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Section 1—Basic Circuits
(Continued)
Offset Voltage Adjustment for Inverting Amplifiers Using 10 kΩ Source Resistance or Less
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Section 2 — Signal Generation
Low Frequency Sine WaveGenerator with Quadrature Output
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Section 2 — Signal Generation
(Continued)
High Frequency Sine Wave Generator with Quadrature Output
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Free-Running Multivibrator
Wein Bridge Sine Wave Oscillator
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*Chosen for oscillation at 100 Hz
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*Eldema 1869 10V, 14 mA Bulb
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Section 2— Signal Generation
(Continued) Function Generator
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Pulse Width Modulator
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Section 2 — Signal Generation
Bilateral Current Source
(Continued) Bilateral Current Source
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Section 2 — Signal Generation
(Continued)
Wein Bridge Oscillator with FET AmplitudeStabilization
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Section 2 — Signal Generation
Low Power Supply for Integrated Circuit Testing
(Continued)
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*VOUT = 1V/kΩ
Positive Voltage Reference
Positive Voltage Reference
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Section 2 — Signal Generation
Negative Voltage Reference
(Continued) Negative...
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