ANALOG DEVICES AD534 Service Manual

Internally Trimmed

FEATURES

Pretrimmed to ±0.25% maximum 4-quadrant error (AD534L)
All inputs (X, Y, and Z) differential, high impedance for

[(X

− X2)(Y1 − Y2)/10 V] + Z2 transfer function

1

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

GENERAL DESCRIPTION

The AD534 is a monolithic laser trimmed four-quadrant multi­plier 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

Precision IC Multiplier

AD534

FUNCTIONAL BLOCK DIAGRAM

STABLE

SF

X

1

V-TO-1

X

2

Y

1

V-TO-1

Y

2

Z

1

V-TO-1

Z

2

REFERENCE

AND BIAS

TRANSLINEAR

MULTIPLIER

ELEMENT

0.75 AT TEN

TRANSFER FUNCT ION

V

= A

OUT

A

Figure 1.

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.

– X2) (Y1 – Y2)

(X

1

HIGH GAIN
OUTPUT
AMPLIFIER

+V
–V

SF

OUT

S
S

– Z2)

– (Z

1

09675-006

Rev. C

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
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Tel: [phone] www.analog.com
Fax: [phone] ©1977–2011 Analog Devices, Inc. All rights reserved.

AD534

TABLE OF CONTENTS

Features.............................................................................................. 1

Applications....................................................................................... 1

Functional Block Diagram .............................................................. 1

General Description ......................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Absolute Maximum Ratings............................................................ 7

Thermal Resistance ...................................................................... 7

ESD Caution.................................................................................. 7

Pin Configurations and Function Descriptions ........................... 8

Typical Performance Characteristics ........................................... 10

REVISION HISTORY

4/11—Rev. B to Rev. C

Changes to Features Section, Figure 1, and

General Description Section ........................................................... 1

Added Pin Configurations and Function Descriptions

Section................................................................................................ 8

Moved Provides Gain with Low Noise Section .......................... 12

Moved Unprecedented Flexibility Section .................................. 14

Updated Outline Dimensions....................................................... 17

Changes to Ordering Guide.......................................................... 18

Functional Description.................................................................. 12

Provides Gain with Low Noise ..................................................... 12

Operation as a Multiplier.......................................................... 12

Operation as a Squarer .............................................................. 13

Operation as a Divider............................................................... 13

Operation as a Square Rooter................................................... 14

Unprecedented Flexibility......................................................... 14

Applications Information.............................................................. 15

Outline Dimensions....................................................................... 17

Ordering Guide .......................................................................... 18

Rev. C | Page 2 of 20

AD534

−

−

−

SPECIFICATIONS

TA = 25°C, ±VS = ±15 V, R ≥ 2 kΩ, all minimum and maximum specifications are guaranteed, unless otherwise noted.

Table 1.

AD534J AD534K AD534L
Parameter Min Typ Max Min Typ Max Min Typ Max Unit

MULTIPLIER PERFORMANCE

Transfer Function

−

))((

YYXX

2121

Z

+

V10

2

))((

YYXX

2121

Z

+

V10

2

YYXX

−−

))((

2121

V10

+

Tot al E r ror1 (−10 V ≤ X, Y ≤ +10 V) ±1.02 ±0.52 ±0.252 %
TA = T

MIN

to T

±1.5 ±1.0 ±0.5 %

MAX

Total Error vs. Temperature ±0.022 ±0.015 ±0.008 %/°C
Scale Factor Error

(SF = 10.000 V Nominal)3 ±0.25 ±0.1 ±0.1 %

Temperature Coefficient of

Scaling Voltage ±0.02 ±0.01 ±0.005 %/°C

Supply Rejection (±15 V ± 1 V) ±0.01 ±0.01 ±0.01 %

2

Nonlinearity, X (X = 20 V p-p,

±0.4 ±0.2 ±0.3

±0.10 ±0.122 %

Y = 10 V)
Nonlinearity, Y (Y = 20 V p-p, X = 10 V ±0.2 ±0.1 ±0.12 ±0.005 ±0.12 %
Feedthrough4, X (Y Nulled,

±0.3 ±0.15 ±0.3

2

±0.05 ±0.122 %

X = 20 V p-p 50 Hz)

2

Feedthrough4, Y (X Nulled,

±0.01 ±0.01 ±0.1

±0.003 ±0.12 %

Y = 20 V p-p, 50 Hz)
Output Offset Voltage ±5 ±302 ±2 ±152 ±2 ±102 mV
Output Offset Voltage Drift 200 100 100 μV/°C

DYNAMICS

Small Signal BW (V
1% Amplitude Error (C
Slew Rate (V

OUT

Settling Time (to 1%, D V

= 0.1 rms) 1 1 1 MHz

OUT

= 1000 pF) 50 50 50 kHz

LOAD

20 p-p) 20 20 20 V/μs

= 20 V) 2 2 2 μs

OUT

NOISE

Noise Spectral Density

SF = 10 V 0.8 0.8 0.8 μV/√Hz

SF = 3 V5 0.4 0.4 0.4 μV/√Hz
Wideband Noise

f = 10 Hz to 5 MHz 1 1 1 mV rms

f = 10 Hz to 10 kHz 90 90 90 μV rms

OUTPUT

Output Voltage Swing ±112 ±112 ±112 V
Output Impedance (f ≤ 1 kHz) 0.1 0.1 0.1 Ω
Output Short-Circuit Current

(RL = 0 Ω, TA = T

MIN

to T

) 30 30 30 mA

MAX

Amplifier Open-Loop Gain (f = 50 Hz) 70 70 70 dB

INPUT AMPLIFIERS (X, Y, and Z)6

Signal Voltage Range

Differential or Common Mode ±10 ±10 ±10 V

Operating Differential ±12 ±12 ±12 V
Offset Voltage (X, Y) ±5 ±202 ±2 ±102 ±2 ±102 mV
Offset Voltage Drift (X, Y) 100 50 50 μV/°C
Offset Voltage (Z) ±5 ±302 ±2 ±152 ±2 ±102 mV
Offset Voltage Drift (Z) 200 100 100 μV/°C
CMRR 602 80 702 90 702 90 dB

Z

2

Rev. C | Page 3 of 20

AD534

−

AD534J AD534K AD534L
Parameter Min Typ Max Min Typ Max Min Typ Max Unit

Bias Current 0.8 2.02 0.8 2.02 0.8 2.02 μA
Offset Current 0.1 0.1 0.05 0.22 μA
Differential Resistance 10 10 10 MΩ

DIVIDER PERFORMANCE

Transfer Function (X1 > X2)

V10

)(

ZZ

12

+

Y

−−)(

1

XX

21

ZZ

)(

12

V10

+

Y

−

1

XX

)(

21

V10

)(

ZZ

12

+

Y

−−)(

1

XX

21

Tot al E r ror1

X = 10 V, −10 V ≤ Z ≤ +10 V ±0.75 ±0.35 ±0.2 %
X = 1 V, −1 V ≤ Z ≤ +1 V ±2.0 ±1.0 ±0.8 %

0.1 V ≤ X ≤ 10 V, −10 V ≤ Z ≤ +10 V ±2.5 ±1.0 ±0.8 %

SQUARER PERFORMANCE

Transfer Function

2

−

)(

21

ZXX+

V10

2

2

−

)(

21

ZXX+

V10

2

2

−

)(

21

ZXX+

V10

2

Total Error (−10 V ≤ X ≤ +10 V) ±0.6 ±0.3 ±0.2 %

SQUARE-ROOTER PERFORMANCE

Transfer Function (Z1 ≤ Z2) √(10 V(Z2 – Z1)) + X2 √(10 V(Z2 – Z1)) + X

2

√(10 V(Z

– Z1)) + X

2

Tot al E r ror1 (1 V ≤ Z ≤ 10 V) ±1.0 ±0.5 ±0.25 %

POWER SUPPLY SPECIFICATIONS

Supply Voltage

Rated Performance ±15 ±15 ±15 V
Operating ±8 ±182 ±8 ±182 ±8 ±182 V

Supply Current

Quiescent 4 62 4 62 4 62 mA

1

Specifications given are percent of full scale, ±10 V (that is, 0.01% = 1 mV).

2

Tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels.

3

Can be reduced down to 3 V using external resistor between –VS and SF.

4

Irreducible component due to nonlinearity; excludes effect of offsets.

5

Using external resistor adjusted to give SF = 3 V.

6

See for definition of sections. Figure 1

2

Rev. C | Page 4 of 20

AD534

−

−

TA = 25°C, ±VS = ±15 V, R ≥ 2 kΩ, all minimum and maximum specifications are guaranteed, unless otherwise noted.

Table 2.

AD534S AD534T
Parameter Min Typ Max Min Typ Max Unit

MULTIPLIER PERFORMANCE

Transfer Function

))((

YYXX

2121

Z

+

V10

2

YYXX

−−

))((

2121

Z

V10

+

Tot al E r ror1 (−10 V ≤ X, Y ≤ +10 V) ±1.02 ±0.52 %
TA = T

MIN

to T

±2.02 ±1.0 %

MAX

Total Error vs. Temperature ±0.022 ±0.012 %/°C
Scale Factor Error

(SF = 10.000 V Nominal)3 ±0.25 ±0.1 %
Temperature Coefficient of Scaling Voltage ±0.02 ±0.01 %/°C
Supply Rejection (±15 V ± 1 V) ±0.01 ±0.01 %
Nonlinearity, X (X = 20 V p-p, Y = 10 V) ±0.4 ±0.2 ±0.32 %
Nonlinearity, Y (Y = 20 V p-p, X = 10 V ±0.2 ±0.1 ±0.12 %
Feedthrough4, X (Y Nulled,

X = 20 V p-p, 50 Hz) ±0.3 ±0.15 ±0.32 %
Feedthrough4, Y (X Nulled,

Y = 20 V p-p, 50 Hz) ±0.01 ±0.01 ±0.12 %
Output Offset Voltage ±5 ±302 ±2 ±152 mV
Output Offset Voltage Drift 5002 3002 μV/°C

DYNAMICS

Small Signal BW (V
1% Amplitude Error (C
Slew Rate (V

OUT

Settling Time (to 1%, ΔV

= 0.1 rms) 1 1 MHz

OUT

= 1000 pF) 50 50 kHz

LOAD

20 p-p) 20 20 V/μs

= 20 V) 2 2 μs

OUT

NOISE

Noise Spectral Density

SF = 10 V 0.8 0.8 μV/√Hz

SF = 3 V5 0.4 0.4 μV/√Hz
Wideband Noise

f = 10 Hz to 5 MHz 1 1 mV/rms

f = 10 Hz to 10 kHz 90 90 μV/rms

OUTPUT

Output Voltage Swing ±112 ±112 V
Output Impedance (f ≤ 1 kHz) 0.1 0.1 Ω
Output Short-Circuit Current (RL = 0 Ω, TA = T

MIN

to T

) 30 30 mA

MAX

Amplifier Open-Loop Gain (f = 50 Hz) 70 70 dB

INPUT AMPLIFIERS (X, Y, and Z)6

Signal Voltage Range

Differential or Common Mode ±10 ±10 V

Operating Differential ±12 ±12 V
Offset Voltage (X, Y) ±5 ±202 ±2 ±102 mV
Offset Voltage Drift (X, Y) 100 150 μV/°C
Offset Voltage (Z) ±5 ±302 ±2 ±152 mV
Offset Voltage Drift (Z) 5002 3002 μV/°C
CMRR 602 80 702 90 dB
Bias Current 0.8 2.02 0.8 2.02 μA
Offset Current 0.1 0.1 μA
Differential Resistance 10 10 MΩ

2

Rev. C | Page 5 of 20

AD534

−

AD534S AD534T
Parameter Min Typ Max Min Typ Max Unit

DIVIDER PERFORMANCE

Transfer Function (X1 > X2)

ZZ

)(

12

V10

+

Y

−

1

XX

)(

21

V10

)(

ZZ

12

+

Y

−−)(

1

XX

21

Tot al E r ror1

X = 10 V, −10 V ≤ Z ≤ +10 V ±0.75 ±0.35 %
X = 1 V, −1 V ≤ Z ≤ +1 V ±2.0 ±1.0 %

0.1 V ≤ X ≤ 10 V, −10 V ≤ Z ≤ +10 V ±2.5 ±1.0 %

SQUARER PERFORMANCE

Transfer Function

2

−

)(

21

ZXX+

V10

2

2

−

)(

21

ZXX+

V10

2

Total Error (−10 V ≤ X ≤ +10 V) ±0.6 ±0.3 %

SQUARE-ROOTER PERFORMANCE

Transfer Function (Z1 ≤ Z2) √(10 V(Z2 – Z1)) + X2 √(10 V(Z2 – Z1)) + X2
Tot al E r ror1 (1 V ≤ Z ≤ 10 V) ±1.0 ±0.5 %

POWER SUPPLY SPECIFICATIONS

Supply Voltage

Rated Performance ±15 ±15 V
Operating ±8 ±222 ±8 ±222 V

Supply Current

Quiescent 4 62 4 62 mA

1

Specifications given are percent of full scale, ±10 V (that is, 0.01% = 1 mV).

2

Tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels.

3

Can be reduced down to 3 V using external resistor between –VS and SF.

4

Irreducible component due to nonlinearity: excludes effect of offsets.

5

Using external resistor adjusted to give SF = 3 V.

6

See for definition of sections. Figure 1

Rev. C | Page 6 of 20