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CIRCUIT060064

Non-inverting op amp with non-inverting positive reference voltage circuit

CIRCUIT060064

Overview

This design uses a non-inverting amplifier with a non-inverting positive reference to translate an input signal of –1 V to 3 V to an output voltage of 0.05 V to 4.95 V. This circuit can be used to translate a sensor output voltage with a positive slope and negative offset to a usable ADC input voltage range.
Features
  • Input: Vi = -1 V to 3 V
  • Output: Vo = 0.05 V to 4.95 V
  • Supply:
    • Vcc = 5 V
    • Vee = 0 V
    • Vref = 2.5 V
General-purpose op amps
MCP6292 — Dual, 5.5-V, 10-MHz, low noise (8.7-nV/√Hz), RRIO operational amplifier
Precision op amps (Vos<1mV)
OPA388 — Single, 10-MHz, CMOS, zero-drift, zero-crossover, true RRIO precision operational amplifier
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Type Title Date
* Circuit design Non-inverting op amp with non-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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