FET buffer amplifier with high input impedance using INA103
Source: InternetPublisher:红水杯 Keywords: Amplifier Updated: 2024/09/13
As shown in the figure, it is a FET buffer amplifier with high input impedance. This circuit uses the FET high impedance characteristics of the internal input stage of OPA627, and uses two OPA627s to form an emitter follower as a buffer amplifier for the circuit input, so it has extremely high input impedance and the circuit gain is 100.
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