Op amp impedance multiplication circuit
Source: InternetPublisher:方世玉223 Keywords: Power supply other power circuits Updated: 2020/10/27
As the only standard resistor, the equivalent feedback resistor has a resistance of 10GΩ. Even if the offset voltage is multiplied by 100, the output offset is actually reduced because the output is dependent on the compensation current rather than the bias current. The summary point voltage is less than 5 millivolts.
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