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With capacitors in this Inverting Op-Amp, how should I find worst case values of Rin and Rf?

With capacitors in this Inverting Op-Amp, how should I find worst case values of Rin and Rf?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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With capacitors in this Inverting Op-Amp, how should I find worst case values of Rin and Rf?
The image depicts an electronic circuit diagram of an operational amplifier (op-amp) configured as an integrator. ### Components and Description: 1. **Input Voltage (Vin):** - The input signal is denoted by \( V_{in} \). 2. **Capacitor (C):** - Two capacitors are shown. The first capacitor is connected in series with the input voltage \( V_{in} \). The second capacitor is connected in parallel with the feedback resistor. 3. **Resistor (Ri):** - This resistor is connected in series with the input capacitor and leads into the inverting terminal of the op-amp. 4. **Operational Amplifier:** - The op-amp symbol shows two input terminals: the inverting (-) and non-inverting (+) terminals. - The non-inverting terminal is connected to the ground. 5. **Feedback Resistor (Rf):** - A resistor connected in parallel with the feedback capacitor around the op-amp. This forms a part of the feedback loop from the output back to the inverting input. 6. **Output Voltage (Vout):** - The output voltage is denoted by \( V_{out} \) and comes from the op-amp. ### Functionality: This configuration is a basic example of an operational amplifier integrator circuit. In this circuit, the input voltage \( V_{in} \) is integrated over time to produce the output voltage \( V_{out} \). The presence of a feedback resistor (\( R_f \)) is typical to create a practical integrator, preventing saturation and improving stability.
Transcribed Image Text:The image depicts an electronic circuit diagram of an operational amplifier (op-amp) configured as an integrator. ### Components and Description: 1. **Input Voltage (Vin):** - The input signal is denoted by \( V_{in} \). 2. **Capacitor (C):** - Two capacitors are shown. The first capacitor is connected in series with the input voltage \( V_{in} \). The second capacitor is connected in parallel with the feedback resistor. 3. **Resistor (Ri):** - This resistor is connected in series with the input capacitor and leads into the inverting terminal of the op-amp. 4. **Operational Amplifier:** - The op-amp symbol shows two input terminals: the inverting (-) and non-inverting (+) terminals. - The non-inverting terminal is connected to the ground. 5. **Feedback Resistor (Rf):** - A resistor connected in parallel with the feedback capacitor around the op-amp. This forms a part of the feedback loop from the output back to the inverting input. 6. **Output Voltage (Vout):** - The output voltage is denoted by \( V_{out} \) and comes from the op-amp. ### Functionality: This configuration is a basic example of an operational amplifier integrator circuit. In this circuit, the input voltage \( V_{in} \) is integrated over time to produce the output voltage \( V_{out} \). The presence of a feedback resistor (\( R_f \)) is typical to create a practical integrator, preventing saturation and improving stability.
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