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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 338

Easy Drive delta-sigma analog-to-digital converters cancel input current errors

Mike Mayes

Abstract

The LTC248x family of Easy Drive delta-sigma analog-to-digital converters that cancel input current errors are described.

Keywords

Analog-to-digital converter

Easy Drive

LTC248x family

Introduction

It is now possible to place large RC networks directly in front of high resolution ΔΣ analog-to-digital converters without degrading their DC accuracy (see Figure 338.1). The LTC248x family of converters solves this problem with Easy Drive technology, a fully passive sampling network that automatically cancels the differential input current. Easy Drive technology does not use on-chip buffers, which compromise performance (see ...

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