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CIRCUIT060050

Band pass filtered inverting attenuator circuit

CIRCUIT060050

Overview

This tunable band-pass attenuator reduces signal level by –40 dB over the frequency range from 10 Hz to 100 kHz. It also allows for independent control of the DC output level. For this design, the pole frequencies were selected outside the pass band to minimize attenuation within the specified bandwidth range.
Features
  • Input: Vi = 100 mV to 50 V
  • Output: Vo = 1 mV to 500 mV
  • Supply:
    • Vcc = 15 V
    • Vee = -15V
    • Vref = 0V
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Technical documentation

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Type Title Date
* Circuit design Band pass filtered inverting attenuator circuit (Rev. B) PDF | HTML 16 Oct 2024
Application note Basic Introduction to Filters - Active, Passive, and Switched-Cap (Rev. A) 21 Apr 2010
Application note More Filter Design on a Budget 06 Dec 2001

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Reference designs

REFERENCE DESIGN
TIPD118 — Bandpass-filtered -40-dB attenuator, less than 0.1-dB error reference design

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