U3 op amp applications
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This document discusses applications of operational amplifiers including instrumentation amplifiers, log and antilog amplifiers, active filters, comparators, waveform generators, clippers and clampers. Specifically, it covers log amplifiers using diodes or transistors with op-amps, temperature compensation circuits, and comparators which compare two inputs and output a signal. The document is a lecture on linear integrated circuits and their applications presented by an assistant professor.
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U3 op amp applications
- 1. EE8451 LINEAR INTEGRATED CIRCUITS & ITS APLLICATIONS Mr. C. KARTHIKEYAN , ASSISTANT PROFESSOR, ECE,RMKCET
- 2. UNIT 3 APPLICATIONS OF OPERATIONAL AMPLIFIERS Instrumentation amplifier, Log and Antilog Amplifiers, first and second order active filters, comparators, multivibrators, waveform generators, clippers, clampers, peak detector, S/H circuit, D/A converter (R- 2R ladder and weighted resistor types), A/D converters using op-amps Mr. C. KARTHIKEYAN , ASSISTANT PROFESSOR, ECE,RMKCET
- 4. EXAMPLE 1
- 5. EXAMPLE 2
- 8. CIRCUIT DIAGRAM LOG AMPLIFIER USING DIODE & OP AMP DIODE CURRENT EQUATION
- 10. CIRCUIT DIAGRAM LOG AMPLIFIER USING TRANSISTOR & OP AMP
- 13. OUTPUT VOLTAGE INDEPENDENT OF Is
- 14. + of DIFFERENTIAL AMPLIFIER
- 16. COMPARE NON INVERTING AMPLIFIER WITH TEMPERATURE COMPENSATION CIRCUIT
- 17. LOG AMPLIFIER
- 20. COMPARATOR
- 21. COMPARATOR-Compares two inputs and gives an output 2 MODES: 1. CLOSED LOOP (with feedback) –TR: ACTIVE REGION . LINEAR APPLICATIONS – eg: + , -, V-I, I-V 2. OPEN LOOOP (without feedback) –TR: SATURATION REGION NON -LINEAR APPLICATIONS – eg: COMPARATOR , CLIPPER ,CLAMPER
- 22. Thanks!