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Gain programmable low noise differential amplifier circuit c

2015-01-05 08:20  
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Gain programmable low noise differential amplifier circuit composed of OPA37
Gain programmable low noise differential amplifier circuit composed of OPA37
Total gain Av and A0, A1 corresponding relation: The main parameters of the OPA27 integrated chips (typical values): The figure shows the gain programmable low noise differential amplifier circuit. The circuit is composed of two parts: The first level differential input consists of the two pieces of OPA27 high precision low noise op-amps , the second level is composed of the numerical control gain programming instrument amplifier PGA203.