CIRCUIT060013

Inverting amplifier with T-network feedback circuit

CIRCUIT060013

Overview

This design inverts the input signal, VIN, and applies a signal gain of 1000 V/V or 60 dB. The inverting amplifier with T-feedback network can be used to obtain a high gain without a small value for R4 or very large values for the feedback resistors.
Features
  • Dual +/- 5-V supply
  • Input: +/- 2.5 mV
  • Output: +/- 2.5 V
  • Bandwidth: 5 kHz
  • Gain: 1000 V/V
Precision op amps (Vos<1mV)
OPA192 High-Voltage, Rail-to-Rail Input/Output, 5µV, 0.2µV/˚C, Precision Operational Amplifier
General-purpose op amps
OPA375 Single, 5.5-V, 10-MHz, low noise (4.6-nV/√Hz), 68-mA output current, RRO operational amplifier TLV9062 Dual, 5.5-V, 10-MHz operational amplifier

Technical documentation

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Type Title Date
* Application note Inverting Amplifier with T-Network Feedback Circuit Apr. 14, 2018
Application note Transimpedance amplifier with T-network circuit Mar. 12, 2021
E-book Analog Engineer’s Circuit Cookbook: Amplifiers (Rev. A) Feb. 18, 2019

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