Texas Instruments DAC7644 Data Sheet

DAC7644

DAC7644

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16-Bit, Quad Voltage Output DIGITAL-TO-ANALOG CONVERTER

FEATURES DESCRIPTION ● LOW POWER: 10m W The DAC7644 is a 16-bit, quad voltage output digital- to-analog converter with guaranteed 15-bit monotonic

● UNIPOLAR OR BIPOLAR OPERATION

performance over the specified temperature range. It

● SETTLING TIME: 10µs to 0.003%

accepts 16-bit parallel input data, has double-buffered ● 15-BIT LINEARITY AND MONOTONICITY: DAC input logic (allowing simultaneous update of all –40°C to +85°C DACs), and provides a readback mode of the internal input registers. Programmable asynchronous reset clears

● PROGRAMMABLE RESET TO MID-SCALE

all registers to a mid-scale code of 8000 or to a zero-

OR ZERO-SCALE

scale of 0000 . The DAC7644 can operate from a single

● DATA READBACK +5V supply or from +5V and –5V supplies. ● DOUBLE-BUFFERED DATA INPUTS Low power and small size per DAC make the DAC7644

ideal for automatic test equipment, DAC-per-pin pro- grammers, data acquisition systems, and closed-loop

APPLICATIONS

servo-control. The DAC7644 is available in a 48-lead ● PROCESS CONTROL SSOP package and offers guaranteed specifications over the –40°C to +85°C temperature range.

● CLOSED-LOOP SERVO-CONTROL ● MOTOR CONTROL ● DATA ACQUISITION SYSTEMS ● DAC-PER-PIN PROGRAMMERS

VREFL VREFH VCCVSSVDD AB Sense VREFL AB VREFH AB AB Sense

DAC7644

I/O Input DAC

DATA I/O DAC A

Buffer Register A Register A VOUTA

VOUTA Sense

Input DAC

DAC B

Register B Register B

VOUTB

VOUTB Sense

A1 Input DAC

Control DAC C

A0 Register C Register C

VOUTC

CS Logic

VOUTC Sense

Input DAC

DAC D

Register D Register D VOUTD

VOUTD Sense

DGND RSTSELAGND LOADDACS VREFL VREFL CD VREFH CDRST VREFH

CD Sense CD Sense

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

© 1999 Burr-Brown Corporation PDS-1535B Printed in U.S.A. November, 1999

DAC7644

SBAS121