Analog Circuit Design Volume Three

Chapter 489

RMS to DC conversion just got easy

Glen Brisebois and Joseph Petrofsky

Abstract

The LTC1966, a precision, micropower, true RMS-to-DC converter that is suitable for a wide range of RMS-to-DC applications, including handheld measurement devices, is described.

Keywords

RMS-to-DC converter

LTC1966

Introduction

The LTC1966 is a precision, micropower, true RMS to DC converter that utilizes an innovative patented ΔΣ computational technique.¹ The internal delta-sigma circuitry of the LTC1966 makes it simpler to use, more accurate, lower power and dramatically more flexible than conventional log-antilog RMS to DC converters. Unlike previously available RMS to DC converters, the superior linearity of the LTC1966 allows hassle-free ...