Band pass filtered inverting attenuator circuit



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.
  • 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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Type Title Date
* Circuit design Band pass filtered inverting attenuator circuit (Rev. A) 01 Feb 2019
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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TIPD118 Bandpass-filtered -40-dB attenuator, less than 0.1-dB error reference design

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