Switched-capacitor lowpass filters for anti-aliasing applications
Richard Markell and Nello Sevastopoulos
Abstract
The performance of the LTC1064-1 8th order Cauer filter with internal thin film resistors is compared to that of the equivalent filter built with operational amplifiers.
Keywords
Filter design
switched-capacitor lowpass filter
LTC1064-1
Introduction
Many signal processing applications require a front end lowpass filter to bandwidth limit the signal of interest. This filter is often crucial to the system designer since it determines the number of bits which the system can resolve by its noise and dynamic range. Until now, the designer rejected the use of switched-capacitor filters as being too noisy, having ...
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