Op Amps for Everyone, 3rd Edition

Chapter 15. Interfacing an Op Amp to an Analog to Digital Converter

15.1. Introduction

One of the most common questions asked by customers is, “Which op amp should I use with a given data converter?” The answer is enough to make a marketing engineer cringe, because it depends on the answers to many questions—way too many to be in the customer's comfort zone. Yet, the answers to these questions are not only necessary for the customer's design to be a success, they are questions that a customer must eventually answer.

It would be handy to have a table with A/D converters on one side and recommended op amps on the other. But this table will never exist—too many variables in system design affect the choice of op amp. The questions in this chapter help ...