LM124-LM224LM324 TYPICAL SINGLE- SUPPLY APPLICATIONS NON-INVERTING DC GAIN DC SUMMING AMPLIFIER e1 100ks2 (As shown Ay= 101) 100k2 e? 100kQ2 00kQ2 100k9 HIGH INPUT Z ADJUSTABLE GAIN DC LOW DRIFT PEAK DETECTOR INSTRUMENTATION AMPLIFIER 2N929〓001F nput current ifR=R5 and R3=R4= R6=R7 R2」e As shown eo=101(e2-el 8/13LM124-LM224-LM324 8/13 TYPICAL SINGLE - SUPPLY APPLICATIONS NON-INVERTING DC GAIN HIGH INPUT Z ADJUSTABLE GAIN DC INSTRUMENTATION AMPLIFIER DC SUMMING AMPLIFIER LOW DRIFT PEAK DETECTOR R1 10kΩ R2 1MΩ 1/4 LM124 10kΩ eI eO +5V e O (V) (mV) 0 AV=1+ R2 R1 (As shown = 101) AV 1/4 LM124 R3 100kΩ eO 1/4 LM124 R1 100kΩ e 1 1/4 LM124 R7 100kΩ R6 100kΩ R5 100kΩ e2 R2 2kΩ Gain adjust R4 100kΩ if R1 = R5 and R3 = R4 = R6 = R7 e0 = (e2 -e1) As shown e0 = 101 (e2 - e1). 1 2R1 R2 + ----------- 1/4 LM124 eO e 4 e 3 e 2 e 1 100kΩ 100kΩ 100kΩ 100kΩ 100kΩ 100kΩ e0 = e1 +e2 -e3 -e4 Where (e1 +e2) ≥ (e3 +e4) to keep e0 ≥ 0V IB 2N 929 0.001µF IB 3R 3MΩ IB Input current compensation eo IB e I 1/4 LM124 Zo ZI C 1µF 2IB R 1MΩ 2IB * Polycarbonate or polyethylene * 1/4 LM124 1/4 LM124