RC4200 데이터 시트보기 (PDF) - Fairchild Semiconductor

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RC4200

Analog Multiplier

Fairchild Semiconductor 

RC4200

Analog Multiplier

www.fairchildsemi.com

Features

• High accuracy

• Nonlinearity – 0.1%

Temperature coefficient – 0.005%/°C

• Multiple functions

• Multiply, divide, square, square root, RMS-to-DC

conversion, AGC and modulate/demodulate

• Wide bandwidth – 4 MHz

• Signal-to-noise ratio – 94 dB

Applications

• Low distortion audio modulation circuits

• Voltage-controlled active filters

• Precision oscillators

Description

The RC4200 analog multiplier has complete compensation

for nonlinearity, the primary source of error and distortion.

This multiplier also has three onboard operational amplifiers

designed specifically for use in multiplier logging circuits.

These amplifiers are frequency compensated for optimum

AC response in a logging circuit, the heart of a multiplier,

and can therefore provide superior AC response.

The RC4200 can be used in a wide variety of applications

without sacrificing accuracy. Four-quadrant multiplication,

two-quadrant division, square rooting, squaring and RMS

conversion can all be easily implemented with predictable

accuracy. The nonlinearity compensation is not just trimmed

at a single temperature, it is designed to provide compensa-

tion over the full temperature range. This nonlinearity

compensation combined with the low gain and offset drift

inherent in a well-designed monolithic chip provides a very

high accuracy and a low temperature coefficient.

Block Diagram

I2

Q2

–

VOS2

+

Q3

I3

RC4200

Q1

–

+

I1

VOS1

+

–

Q4

I4

65-4200-01

REV. 1.2.1 6/14/01

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