Low Cost
a
Analog Multiplier
AD633
FEATURES
Four-Quadrant Multiplication
CONNECTION DIAGRAMS
8-Lead Plastic DIP (N) Package
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
+V
W
8
7
X1
X2
1
2
S
1
A
1
10V
Z
Y1
Y2
3
4
6
5
APPLICATIONS
1
–V
Multiplication, Division, Squaring
Modulation/Demodulation, Phase Detection
Voltage-Controlled Amplifiers/Attenuators/Filters
S
AD633JN/AD633AN
8-Lead Plastic SOIC (SO-8) Package
PRODUCT DESCRIPTION
X2
X1
Y1
Y2
1
2
8
7
1
1
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.
1
10V
–V
+V
A
3
4
6
5
S
S
W
Z
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.
AD633JR/AD633AR
(X – X ) (Y – Y )
1
2
1
2
W =
+ Z
10V
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.
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.
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 MΩ) input resistances make signal source loading
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).
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.
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
World Wide Web Site: http://www.analog.com
© Analog Devices, Inc., 1999
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