Chapter 417

Single-ended to differential amplifier design tips

Philip Karantzalis and Tim Regan

Abstract

The design of a single-ended to differential amplifier is discussed.

Keywords

Single-ended to differential amplifier

LTC6400

Introduction

A fully differential amplifier is often used to convert a single-ended signal to a differential signal, a design which requires three significant considerations: the impedance of the single-ended source must match the single-ended impedance of the differential amplifier, the amplifier’s inputs must remain within the common mode voltage limits and the input signal must be level shifted to a signal that is centered at the desired output common mode voltage.

In all cases, input impedance matching ...

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