REV. B

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

a

AD633

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

Tel: 781/329-4700

World Wide Web Site: http://www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 1999

Low Cost

Analog Multiplier

CONNECTION DIAGRAMS

8-Lead Plastic DIP (N) Package

AD633JN/AD633AN

1

2

3

4

8

7

6

5

1

10V

X1

X2

Y1

Y2

W

Z

A

1

1

8-Lead Plastic SOIC (SO-8) Package

AD633JR/AD633AR

1

2

3

4

8

7

6

5

1

10V

X1

X2

Y1

Y2

W

Z

A

1

1

W =

+ Z

10V

FEATURES

Four-Quadrant Multiplication

Low Cost 8-Lead Package

Complete—No External Components Required

Laser-Trimmed Accuracy and Stability

Total Error Within 2% of FS

Differential High Impedance X and Y Inputs

High Impedance Unity-Gain Summing Input

Laser-Trimmed 10 V Scaling Reference

APPLICATIONS

Multiplication, Division, Squaring

Modulation/Demodulation, Phase Detection

Voltage-Controlled Amplifiers/Attenuators/Filters

PRODUCT DESCRIPTION

The AD633 is a functionally complete, four-quadrant, analog

multiplier. It includes high impedance, differential X and Y

inputs and a high impedance summing input (Z). The low im-

pedance output voltage is a nominal 10 V full scale provided by

a buried Zener. The AD633 is the first product to offer these

features in modestly priced 8-lead plastic DIP and SOIC packages.

The AD633 is laser calibrated to a guaranteed total accuracy of

2% of full scale. Nonlinearity for the Y-input is typically less

than 0.1% and noise referred to the output is typically less than

100

µV rms in a 10 Hz to 10 kHz bandwidth. A 1 MHz band-

width, 20 V/

µs slew rate, and the ability to drive capacitive loads

make the AD633 useful in a wide variety of applications where

simplicity and cost are key concerns.

The AD633’s versatility is not compromised by its simplicity.

The Z-input provides access to the output buffer amplifier,

enabling the user to sum the outputs of two or more multipliers,

increase the multiplier gain, convert the output voltage to a

current, and configure a variety of applications.

The AD633 is available in an 8-lead plastic DIP package (N)

and 8-lead SOIC (R). It is specified to operate over the 0

°C to

+70

°C commercial temperature range (J Grade) or the –40°C to

+85

°C industrial temperature range (A Grade).

PRODUCT HIGHLIGHTS

1. The AD633 is a complete four-quadrant multiplier offered in

low cost 8-lead plastic packages. The result is a product that

is cost effective and easy to apply.

2. No external components or expensive user calibration are

required to apply the AD633.

3. Monolithic construction and laser calibration make the de-

vice stable and reliable.

4. High (10 M

Ω) input resistances make signal source loading

negligible.

5. Power supply voltages can range from

±8 V to ±18 V. The

internal scaling voltage is generated by a stable Zener diode;

multiplier accuracy is essentially supply insensitive.