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Circuits Sensor Interface & Bias Light Sensors & Photodiodes Photodiode Interface & Transimpedance Amps
Circuits Signal Conditioning Operational Amplifiers (Op Amps) Zero Drift Amplifiers
Circuits Signal Conditioning Operational Amplifiers (Op Amps) Low Noise Amplifiers

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Low Noise, Low Power Photodiode Amplifier With DC Precision

View Full Size Image View Original Design Note Low Noise, Low Power Photodiode Amplifier With DC Precision

Instead of simply grounding the LT6202 noninverting input, an LTC2050 drives it (and therefore the source) exactly to where it needs to be for zero JFET gate voltage. Output offset is 200mV and output noise is 2mVP-P measured in a 20MHz bandwidth.



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