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Op Amps for Everyone, 3rd Edition by Bruce Carter

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Appendix A. Single Supply Circuit Collection
Bruce Carter
A.1. Introduction
This chapter is devoted to a collection of single supply op amp circuits. These are presented here because they are somewhat unusual and do not fit well into the material presented in the main portion of the book.
A.2. Instrumentation Amplifier
In the circuit configuration in Figure A.1, both sources connect to the noninverting input of two op amps. This impedance is very high, and if the op amps are identical, both impedances are very nearly equal. This is ideal for interfacing to very high impedance input signals. The propagation delay is equal to two op amp propagation delays, but the propagation delay is very nearly equal, so any distortion resulting from unequal propagation ...

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