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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 374

Complex data acquisition system uses few components

Richard Markell

Abstract

A complex data acquisition system using LTC1064 quad switched capacitor filters is described.

Keywords

Data acquisition

quad switched capacitor filter

LTC1064

Introduction

Sophisticated filter system designs frequently demand expensive printed circuit boards chock-full of operational amplifiers and precision capacitors. Digital filters require fewer but more expensive devices and a lot of software. However, advances in switched capacitor filters have made the design of elegant filter systems cheaper, easier and much smaller. The system shown in block diagram form in Figure 374.1 is a good example. It is a typical system for filtering transducer ...

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