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CIRCUIT060062

Inverting op amp with inverting positive reference voltage circuit

CIRCUIT060062

Overview

This design uses an inverting amplifier with an inverting positive reference to translate an input signal of –5 V to –1 V to an output voltage of 3.3 V to 0.05 V. This circuit can be used to translate a negative sensor output voltage to a usable ADC input voltage range.
Features
  • Input: Vi = -5 V to -1 V
  • Output: Vo = 0.05 V to 3.3 V
  • Supply:
    • Vcc = 5 V
    • Vee = 0 V
    • Vref = 5 V
General-purpose op amps
TLV9062 — Dual, 5.5-V, 10-MHz operational amplifier
Precision op amps (Vos<1mV)
OPA197 — Single, 36-V, precision, rail-to-rail input output, low offset voltage op amp
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Type Title Date
* Circuit design Inverting op amp with inverting positive reference voltage circuit (Rev. A) 04 Feb 2019
* Application note Designing Gain and Offset in Thirty Seconds 01 Feb 2002

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