CIRCUIT060051

Fast-settling low-pass filter circuit

CIRCUIT060051

Overview

This low-pass filter topology offers a significant improvement in settling time over the conventional single pole RC filter. This is achieved through the use of diodes D1 and D2, that allow the filter capacitor to charge and discharge much faster when there is a large enough difference between the input and output voltages.
Features
  • Input: Vi = -12 V to 12 V
  • Output: Vo = -12 V to 12 V
  • Supply:
    • Vcc = 15 V
    • Vee = -15 V
  • Cutoff frequency: 10 kHz
  • Diode threshold voltage: 20 mV
Precision op amps (Vos<1mV)
OPA827 Low-noise, high-precision, JFET-input operational amplifier
General-purpose op amps
TLC072 Dual, 16-V, 10-MHz, 100-mA output current operational amplifier

Get started

  1. Read the circuit design
  2. Download the model

Technical documentation

star
= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 4
Type Title Date
* Circuit design Fast-settling low-pass filter circuit Jan. 09, 2019
Application note Basic Introduction to Filters - Active, Passive, and Switched-Cap (Rev. A) Apr. 21, 2010
Application note More Filter Design on a Budget Dec. 06, 2001
Application note Fast Settling Low-Pass Filter Sep. 27, 2000

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

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.

Videos