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CIRCUIT060018

Photodiode amplifier circuit

CIRCUIT060018

Overview

This circuit consists of an op amp configured as a transimpedance amplifier for amplifying the light dependent current of a photodiode.
Features
  • Single 5-V supply
  • Input: 0 μA to 2.4 μA
  • Output: 100 mV to 4.9 V
  • Bandwidth: 20 kHz
General-purpose op amps
OPA322 — Single, 5.5-V, 20-MHz, 65-mA output current, low noise (8.5-nV/√Hz) operational amplifier
Precision op amps (Vos<1mV)
LMP7721 — 3 Femtoampere Input Bias Current Precision Amplifier
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Technical documentation

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Type Title Date
* Circuit design Photodiode Amplifier Circuit (Rev. B) PDF | HTML 02 May 2024
E-book Analog Engineer’s Circuit Cookbook: Amplifiers (Rev. D) 24 Sep 2024
Application note AN-31 Amplifier Circuit Collection (Rev. D) 21 Oct 2020
User guide 1-MHz Single-Supply Photodiode Amplifier Reference Design Guide 16 Sep 2014

Related design resources

Design tools & simulation

SIMULATION TOOL
PSPICE-FOR-TI — PSpice® for TI design and simulation tool TINA-TI — SPICE-based analog simulation program
CALCULATION TOOL
ANALOG-ENGINEER-CALC — Analog engineer's calculator

Reference designs

REFERENCE DESIGN
TIPD176 — 1 MHz, Single-Supply, Photodiode Amplifier Reference Design

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