Internally Trimmed

Precision IC Multiplier

AD534

Rev. C

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

©1977–2011 Analog Devices, Inc. All rights reserved.

FEATURES

Pretrimmed to ±0.25% maximum 4-quadrant error (AD534L)

All inputs (X, Y, and Z) differential, high impedance for

Scale factor adjustable to provide up to ×100 gain

Low noise design: 90 μV rms, 10 Hz to10 kHz

Low cost, monolithic construction

Excellent long-term stability

APPLICATIONS

High quality analog signal processing

Differential ratio and percentage computations

Algebraic and trigonometric function synthesis

Wideband, high crest rms-to-dc conversion

Accurate voltage controlled oscillators and filters

Available in chip form

FUNCTIONAL BLOCK DIAGRAM

STABLE

REFERENCE

AND BIAS

0.75 ATTEN

TRANSLINEAR

MULTIPLIER

ELEMENT

SF

OUT

A

V-TO-1

V-TO-1

V-TO-1

HIGH GAIN

OUTPUT

AMPLIFIER

TRANSFER FUNCTION

SF

Figure 1.

GENERAL DESCRIPTION

The AD534 is a monolithic laser trimmed four-quadrant multi-

plier divider having accuracy specifications previously found

only in expensive hybrid or modular products. A maximum

multiplication error of ±0.25% is guaranteed for the AD534L

without any external trimming. Excellent supply rejection, low

temperature coefficients and long-term stability of the on-chip

thin film resistors and buried Zener reference preserve accuracy

even under adverse conditions of use. It is the first multiplier to

offer fully differential, high impedance operation on all inputs,

including the Z input, a feature that greatly increases its

flexibility and ease of use. The scale factor is pretrimmed to the

standard value of 10.00 V; by means of an external resistor, this

can be reduced to values as low as 3 V.

The wide spectrum of applications and the availability of several

grades commend this multiplier as the first choice for all new

designs. The AD534J (±1% maximum error), AD534K (±0.5%

maximum), and AD534L (±0.25% maximum) are specified for

operation over the 0°C to +70°C temperature range. The AD534S

(±1% maximum) and AD534T (±0.5% maximum) are specified

over the extended temperature range, −55°C to +125°C. All

grades are available in hermetically sealed TO-100 metal cans

and SBDIP packages. AD534K, AD534S, and AD534T chips are

also available.