11.1. Operational Amplifiers with Resistance Feedback
In this unit, the gain characteristics of the operational amplifiers with resistive feedback are discussed. These are dc amplifiers that are configured for specific gain and input and output resistance characteristics. The operational amplifier without feedback is in the open-loop mode. The dc (bias) configuration is shown in Fig. 11.1. Due to imbalances in the amplifier circuit, which are a result of variations in the parameters of the transistors and circuit components from the values used in the design, the output will probably be latched at either the plus or minus power supply.
Figure 11.1. Open-loop amplifier. Inputs, output, and power-supply pins are connected. Circuit will be bias ...
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