CIRCUIT060017

Dual-supply, discrete, programmable gain amplifier circuit

CIRCUIT060017

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Overview

This circuit provides programmable, non-inverting gains ranging from 6 dB (2 V/V) to 60 dB (1000 V/V) using a variable input resistance. The design maintains the same cutoff frequency over the gain range.
Features
  • Dual +/- 2.5-V supply
  • Input: +/- 1.25 V
  • Output: +/-2.4 V
  • Bandwidth: 7 kHz
  • Gain: 2 V/V to 1000 V/V

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Downloads

Design tool

Simulation for Discrete Programmable Gain Amplifier Circuit SBOC521.ZIP (22KB)

Release date: 05-Jul-2018
Supported products & hardware

Supported products & hardware

General-purpose op amps
OPA364 Single, 5.5-V, 7-MHz, RRIO operational amplifier
Precision op amps (Vos<1mV)
OPA376 Precision (0.025mV), low noise (7.5nV/rtHz), low quiescent current (760uA) op amp

Technical documentation

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Type Title Date
* Application note Dual-supply, discrete, programmable gain amplifier circuit Dec. 30, 2018
Application note Choosing the Right Multiplexer for a Discrete Programmable Gain Amplifier (PGA) Sep. 29, 2020
E-book Analog Engineer’s Circuit Cookbook: Amplifiers (Rev. A) Feb. 18, 2019

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
TIPD204 Low-Cost Digitally Programmable Gain Amplifier Reference Design

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