CMOS Low Cost,

10-Bit Multiplying DAC

AD7533

Rev. C

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

responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other

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

©2007 Analog Devices, Inc. All rights reserved.

FEATURES

Low cost 10-bit DAC

Low cost AD7520 replacement

Linearity: ½ LSB, 1 LSB, or 2 LSB

Low power dissipation

Full 4-quadrant multiplying DAC

CMOS/TTL direct interface

Latch free (protection Schottky not required)

Endpoint linearity

APPLICATIONS

Digitally controlled attenuators

Programmable gain amplifiers

Function generation

Linear automatic gain controls

GENERAL DESCRIPTION

The AD7533 is a low cost, 10-bit, 4-quadrant multiplying DAC

manufactured using an advanced thin-film-on-monolithic-

CMOS wafer fabrication process.

Pin and function equivalent to the AD7520 industry standard,

the AD7533 is recommended as a lower cost alternative for old

AD7520 sockets or new 10-bit DAC designs.

AD7533 application flexibility is demonstrated by its ability to

interface to TTL or CMOS, operate on 5 V to 15 V power, and

provide proper binary scaling for reference inputs of either

positive or negative polarity.

FUNCTIONAL BLOCK DIAGRAM

20kΩ

S1

S2

S3

SN

20kΩ

20kΩ

20kΩ

10kΩ

BIT 1 (MSB)

BIT 10 (LSB)

DIGITAL INPUTS (DTL/TTL/CMOS COMPATIBLE)

BIT 2

BIT 3

10kΩ

10kΩ

10kΩ

20kΩ

Figure 1.