Chapter 5

Interfacing a Transducer to an Analog-to-Digital Converter

5.1 Introduction

One of the most common questions asked by customers is: "Which op amp should I use with a [substitute a part number] ADC?"

The question of which data converter to use with any given data converter is one that makes marketing people cringe, because the answer touches on different technical areas that they are probably not conversant in. It is also an uncomfortable question for applications support engineers, because the customer may not have a clear idea of all the issues and trade-offs involved.

The process of selecting an op amp to drive a data converter is an exercise in weeding out those op amps that will clearly not work. The subset of op amps left at the ...

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