Bandpass Filtered -40dB Attenuator, <0.1dB Error
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Key Document


This TI Verified Design is a -40dB band-pass filtered inverting attenuator. The circuit creates a filtered, inverted, and attenuated output from a single-ended input signal that can be used for test and measurement, or other waveform generation applications. A single low-noise OPA1611 op amp is used to invert, attenuate, and filter the input signal. The low-noise and low-distortion performance of the OPA1611 allows for a very accurate and clean output signals.

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  • -40dB Filtered signal output
  • 0.1dB Flatband Accuracy
  • Low-Noise output from OPA1611

      This Verified Design Includes:

    • Theory
    • Component Selection
    • TINA-TI Simulation
    • Schematics and PCB Layout
    • Verification and Measured Performance
    • Modification Options

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Design Files

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TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
OPA1611  1.1nV/√Hz Noise, Low Power, Precision Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
OPA1611 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 908 18 Jun 2013
Design files (3)
Title Type Size (KB) Date
ZIP 289 20 Sep 2013
PDF 72 20 Sep 2013
PDF 123 20 Sep 2013
Related Tools & Software

Development Tools (1)

Name Part Number Tool Type
SPICE-based analog simulation program  TINA-TI  Circuit Design & Simulation 

Software (2)

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