Open AccessThird-Order Low-Pass Filters for Limiting the Signal Spectrum at the Differential Input of the Analog/Digital Converters
Author(s) -
Darya Denisenko,
N. Prokopenko,
N. V. Butyrlagin
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1443/1/012011
Subject(s) - converters , analogue filter , low pass filter , electronic engineering , computer science , third order , bandwidth (computing) , amplifier , parametric statistics , attenuation , digital filter , differential (mechanical device) , engineering , electrical engineering , mathematics , telecommunications , physics , philosophy , statistics , theology , optics , voltage , aerospace engineering
Two new architectures of the third-order low-pass filters (LPF) based on differential (Op-Amp) and differential difference amplifiers (DDA) with a paraphase output are compared. This architectures designed for practical use as anti-aliasing filters in analog-to-digital converters of sensor signals of various physical quantities. The basic equations of the developed LPF modifications that make possible to perform their parametric synthesis are given. The computer simulation results are presented, which show that the LPFs under consideration provide the guaranteed frequency response (FR) attenuation outside the bandwidth being implemented on Op-Amps by Analog Device (AD8132) and Texas Instruments (THS4131).