LM2902
LM2902
LM2902
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<strong>LM2902</strong>TYPICAL SINGLE - SUPPLY APPLICATIONSNON-INVERTING DC GAINDC SUMMING AMPLIFIERe 1100kΩ10kΩ1/4<strong>LM2902</strong>e O +5VA V =1+ R2 R1(As shown = 101) A Ve 2100kΩ100kΩ1/4<strong>LM2902</strong>e OR110kΩR21MΩe O (V)e 3100kΩ0e I (mV)100kΩe 4100kΩ2902-16.EPSeo =e1+e2-e3-e4where (e1 +e2)≥ (e3 +e4)to keep eo ≥ 0V2902-17.EPSHIGH INPUT Z ADJUSTABLE GAIN DCINSTRUMENTATION AMPLIFIERLOW DRIFT PEAK DETECTORR1100kΩI B1/4<strong>LM2902</strong>e 1R2Gainadjust2kΩR5100kΩ1/4<strong>LM2902</strong>e 2R3100kΩR6100kΩ1/4<strong>LM2902</strong>R7100kΩR4100kΩe Oe IZ I1/4<strong>LM2902</strong>C1µ F 2I* B2I BR1MΩ* Polycarbonate or polyethylene1/4I B <strong>LM2902</strong>2N9290.001µFI B3R3MΩI BZ oe o1/4<strong>LM2902</strong>Input currentcompensationif R1 =R5and R3 =R4=R6=R7eo=[1+ 2R1R 2] (e2 − e1)As shown e o = 101 (e 2 -e 1 ).2902-18.EPS2902-19.EPS8/11
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