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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 478

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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