Dual-supply, discrete, programmable gain amplifier circuit



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.
  • Dual +/- 2.5-V supply
  • Input: +/- 1.25 V
  • Output: +/-2.4 V
  • Bandwidth: 7 kHz
  • Gain: 2 V/V to 1000 V/V
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
Download View video with transcript Video

Get started

  1. Read the circuit design
  2. Download the model

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 3
Type Title Date
* Circuit design Dual-supply, discrete, programmable gain amplifier circuit 30 Dec 2018
E-book Analog Engineer’s Circuit Cookbook: Amplifiers (Rev. B) 05 Oct 2022
Application note Choosing the Right Multiplexer for a Discrete Programmable Gain Amplifier (PGA) PDF | HTML 29 Sep 2020

Related design resources

Design tools & simulation

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

Reference designs

TIPD204 Low-Cost Digitally Programmable Gain Amplifier Reference Design

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support.