AD7839_15 Datasheet, PDF(1/12 Page) Analog Devices – Octal 13-Bit, Parallel Input, Voltage-Output DAC

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AD7839_15 Datasheet, PDF (1/12 Pages) Analog Devices – Octal 13-Bit, Parallel Input, Voltage-Output DAC

Octal 13-Bit, Parallel Input,

Voltage-Output DAC

AD7839

FEATURES

Eight 13-Bit DACs in One Package

Voltage Outputs

Offset Adjust for Each DAC Pair

Reference Range of Ø5 V

Maximum Output Voltage Range of Ø10 V

Clear Function to User-Defined Voltage

44-Lead MQFP Package

APPLICATIONS

Automatic Test Equipment

Process Control

General Purpose Instrumentation

GENERAL DESCRIPTION

The AD7839 contains eight 13-bit DACs on one monolithic

chip. It has output voltages with a full-scale range of Â± 10 V

from reference voltages of Â± 5 V.

The AD7839 accepts 13-bit parallel loaded data from the exter-

nal bus into one of the input registers under the control of the

WR, CS and DAC channel address pins, A0âA2.

The DAC outputs are updated on reception of new data into

the DAC registers. All the outputs may be updated simulta-

neously by taking the LDAC input low.

Each DAC output is buffered with a gain-of-two amplifier into

which an external DAC offset voltage can be inserted via the

DUTGNDx pins.

The AD7839 is available in a 44-lead MQFP package.

FUNCTIONAL BLOCK DIAGRAM

VCC

VSS VDD

VREF(+)

VREF(â)

DUTGND

DB12

DB0

LDAC

AD7839

13 INPUT 13

REG

DAC 13

REG

DAC A

13 INPUT 13

REG

DAC 13

REG

DAC B

13 INPUT 13

REG

DAC 13

REG

DAC C

13 INPUT 13

REG

DAC 13

REG

DAC D

13 INPUT 13

REG

DAC 13

REG

DAC E

13 INPUT 13

REG

DAC 13

REG

DAC F

13 INPUT 13

REG

DAC 13

REG

DAC G

13 INPUT 13

REG

DAC 13

REG

DAC H

VOUTA

VOUTB

VOUTC

VOUTD

VOUTE

VOUTF

VOUTG

VOUTH

GND

VREF(+) VREF(â)

REV. 0

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.

VREF(+) VREF(â)

CDEF CDEF

CLR

DUTGND DUTGND

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

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