Precision unity gain inverting amplifier circuit composed of INA105
Source: InternetPublisher:太白金星 Keywords: Amplifier circuit INA105 Updated: 2024/09/18
As shown in the figure, this is a precision unity gain inverting amplifier circuit. This circuit connects pin 1 to pin 3 and grounds them. Two 25kΩ resistors are connected in parallel inside. The signal is input from pin 2, forming an inverting amplifier circuit with a gain of 1 (unity gain), that is, the output voltage Vo = -V2. The gain error of this circuit is 0.01% (maximum), the nonlinearity is 0.001% (maximum), and the gain drift is 2×10-6/C.
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