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Take the mystery out of the switched-capacitor filterThe system designer’s filter compendium
Introduction
Overview
This chapter presents guidelines for circuits utilizing Linear Technology’s switched-capacitor filter family. Although the switched-capacitor filter has been designed into “telecom” circuits for over 20 years, the newer devices are faster, quieter and lower in distortion. These filters now achieve total harmonic distortion (THD) below −76dB (LTC®1064-2), wideband noise below 55μVRMS (LTC1064-3), high frequency of operation (LTC1064-2, LTC1064-3 and LTC1064-4 to 100kHz) and steep roll-offs from passband to stopband (LTC1064-1: −72dB at 1.5× fCUTOFF). These specifications make the new generation of switched-capacitor ...
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