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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 379

Sampling of signals for digital filtering and gated measurements

William Rempfer

Abstract

The use of the LTC1090 forsampling of signals for digital filtering and gated measurements is described.

Keywords

Digital filtering

gated measurement

LTC1090

Introduction

For many signal processing applications a sample-and-hold function is required in a data acquisition system. It is often critical for the processing system to know the exact value of an analog input at an exact time. In DSP applications such as digital filters the usable bandwidth of the system is limited by the Nyquist frequency and the sample-and-hold bandwidth need only be, and is often intentionally limited to, one half the sampling rate. However, another area ...

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