Inverting Gain Amplifier

Last modified by Microchip on 2023/11/09 09:03

The circuit shown in Figure 1 depicts an inverting gain amplifier using an MCP6XXX op-amp. It represents an impedance of R1 to the sensor (Vsen) and produces a negative gain from Vsen to Vout.

Schematic showing inverting gain amplifier using a MCP6XXX op amp

Figure 1


  • Resistive isolation from the source
  • Large input voltage range is possible
  • Virtually no input stage distortion
  • Simplicity


  • Resistive loading of the source
  • Inverting gain
  • Amplifies Common mode noise

Sensor Examples

  • Thermo pile
  • High-side (Vdd) voltage sensor

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