n9.2 Figure D9.2 is a differential voltage amplifier, often called an instrumentation amplifier, whi

n9.2 Figure D9.2 is a differential voltage amplifier, often called an instrumentation amplifier, which has a high input resistance, and therefore more appropriate for applications with a high source resistance (like the medical applications previously mentioned). It is also commonly used to measure sensor outputs from bridge circuits. Assuming ideal op amps; what is output voltage in terms of the two inputs? an expression for the O R2 R1 RG RI FIGURE D9.2 Ans: R2 2R2 + RI RG (1 1 +

 

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