0.1-Hz to 10-Hz amplifier noise measurement filter reference design


Design files


This circuit is designed to amplify low frequency noise (0.1Hz to 10Hz) to a level that is easily measured by and oscilloscope. It achieves this function with a 0.1Hz second order high pass filter and a to 10Hz forth order low pass filter. The 0.1Hz to 10Hz noise measurement is a common figure of merit given in amplifier data sheets. This design is intended to facilitate the measurement 0.1Hz to 10Hz noise for the commonly used different package styles.

  • Filters 0.1-Hz to 10-Hz noise
  • Amplifies noise by a factor of 100,000 x
  • Allows for testing of common amplifier package configurations

This verified design includes:

  • Theory
  • Component Selection
  • TINA-TI Simulation
  • Schematics and PCB Layout
  • Verification and Measured Performance
  • Modification Options
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

SLAC592A.ZIP (473 K)

Detailed schematic diagram for design layout and components

TIDR219A.PDF (125 K)

Detailed schematic diagram for design layout and components

TIDR221A.PDF (69 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDC166.ZIP (360 K)

Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

Precision op amps (Vos<1mV)

OPA827Low-noise, high-precision, JFET-input operational amplifier

Data sheet: PDF | HTML

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Technical documentation

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Type Title Date
* User guide TIPD122 Verified Design Reference Guide Jun. 18, 2013

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TINA-TI SPICE-based analog simulation program

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