Low-pass filtered non-inverting amplifier circuit




This low-pass non-inverting circuit amplifies the signal level by 20 V/V (26 dB) and filters the signal by setting the pole at 10 kHz. Components R1 and C1 create a low-pass filter on the non-inverting pin. The frequency response of this circuit is the same as that of a passive RC filter, except that the output is amplified by the pass-band gain of the amplifier. Components C2 and R3 are used to set the cutoff frequency, fc, of the non-inverting amplifier.
  • Input: Vi = -0.1 V to 0.1 V
  • Output: Vo = -2 V to 2 V
  • BW: fc = 10 kHz
  • Supply:
    • Vcc = 2.5 V
    • Vee = -2.5 V

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Simulation for Low-Pass Filtered Non-Inverting Amplifier Circuit SBOC528.ZIP (19KB)

Supported products & hardware

Supported products & hardware

General-purpose op amps
OPA375 Single, 5.5-V, 10-MHz, low noise (4.6-nV/√Hz), 68-mA output current, RRO operational amplifier TLV9001 Single, 5.5-V, 1-MHz, RRIO operational amplifier for cost-optimized applications

Technical documentation

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Type Title Date
* Circuit design Low-pass, filtered, non-inverting amplifier circuit Jan. 27, 2021
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

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Reference designs

TIPD185 AC Coupled, Single-Supply, Inverting and Non-inverting Amplifier Reference Design

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