Internally Trimmed
Precision IC Multiplier
Data Sheet
AD534
Rev. D Document Feedback
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 that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©1977–2013 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
Pretrimmed to ±0.25% maximum 4-quadrant error (AD534L)
All inputs (X, Y, and Z) differential, high impedance for
[(X
1
− X
2
)(Y
1
− Y
2
)/10 V] + Z
2
transfer function
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
09675-006
STABLE
REFERENCE
AND BIAS
0.75 ATTEN
TRANSLINEAR
MULTIPLIER
ELEMENT
SF
+V
S
–V
S
OUT
X
1
X
2
Y
1
Y
2
Z
1
Z
2
A
V-TO-1
V-TO-1
V-TO-1
HIGH GAIN
OUTPUT
AMPLIFIER
TRANSFER FUNCTION
V
OUT
= A
(X
1
– X
2
) (Y
1
– Y
2
)
SF
– (Z
1
– Z
2
)
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.
