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CIRCUIT060060

Single-supply, high-input voltage, full-wave rectifier circuit

CIRCUIT060060

Overview

This single-supply precision full-wave rectifier is optimized for high-input voltages. When Vi > 0 V, D1 is reverse biased and the top part of the circuit, U1, is activated resulting in a circuit with a gain of 1 V/V. When Vi < 0 V, D1 is forward biased and the bottom part of the circuit, U2, is activated resulting in an inverting amplifier circuit with a gain of –1 V/V.
Features
  • Input: Vi = 9 V
  • Output: Vo = 4.5 V
  • Frequency: f_max = 50 kHz
  • Supply:
    • Vcc = 5 V
    • Vee = 0 V
General-purpose op amps
OPA322 — Single, 5.5-V, 20-MHz, 65-mA output current, low noise (8.5-nV/√Hz) operational amplifier TLV9062 — Dual, 5.5-V, 10-MHz operational amplifier
Precision op amps (Vos<1mV)
OPA350 — Single, single-supply, rail-to-rail, high speed, low noise operational amplifier
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Technical documentation

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Type Title Date
* Circuit design Single-supply, high-input voltage, full-wave rectifier circuit PDF | HTML 13 Apr 2021
User guide Precision Full-Wave Rectifier, Dual Supply Design Guide 08 Jan 2014
Application note Single-Supply Op Amp Design Techniques (Rev. A) 14 Mar 2001

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Reference designs

REFERENCE DESIGN
TIPD124 — Single-Supply Low-Input Voltage Optimized Precision Full-Wave Rectifier Reference Design

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