Chapter 26
Useful Circuits
26.1 Introduction
Portable and single-supply electronic equipment is becoming more popular each day. The demand for single-supply op-amp circuits increases with the demand for portable electronic equipment because most portable systems have one battery. Split- or dual-supply op-amp circuit design is straightforward because op-amp inputs and outputs are referenced to the normally grounded center tap of the supplies. In the majority of split-supply applications, signal sources driving the op-amp inputs are referenced to ground, thus with one input of the op-amp referenced to ground, as shown in Figure 26.1, there is no need to consider input common-mode voltage problems.
(26.1) ...
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