Datasheet

1
®
DAC7644
16-Bit, Quad Voltage Output
DIGITAL-TO-ANALOG CONVERTER
®
DAC7644
DESCRIPTION
The DAC7644 is a 16-bit, quad voltage output digital-
to-analog converter with guaranteed 15-bit monotonic
performance over the specified temperature range. It
accepts 16-bit parallel input data, has double-buffered
DAC input logic (allowing simultaneous update of all
DACs), and provides a readback mode of the internal
input registers. Programmable asynchronous reset clears
all registers to a mid-scale code of 8000
H
or to a zero-
scale of 0000
H
. The DAC7644 can operate from a single
+5V supply or from +5V and –5V supplies.
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
servo-control. The DAC7644 is available in a 48-lead
SSOP package and offers guaranteed specifications
over the –40°C to +85°C temperature range.
FEATURES
● LOW POWER: 10mW
● UNIPOLAR OR BIPOLAR OPERATION
● SETTLING TIME: 10µs to 0.003%
● 15-BIT LINEARITY AND MONOTONICITY:
–40°C to +85°C
● PROGRAMMABLE RESET TO MID-SCALE
OR ZERO-SCALE
● DATA READBACK
● DOUBLE-BUFFERED DATA INPUTS
APPLICATIONS
● PROCESS CONTROL
● CLOSED-LOOP SERVO-CONTROL
● MOTOR CONTROL
● DATA ACQUISITION SYSTEMS
● DAC-PER-PIN PROGRAMMERS
© 1999 Burr-Brown Corporation PDS-1535B Printed in U.S.A. November, 1999
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone]
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
DAC7644
DAC A
DAC
Register A
Input
Register A
I/O
Buffer
Control
Logic
DAC B
DAC
Register B
Input
Register B
DAC C
DAC
Register C
Input
Register C
DAC D
DAC
Register D
Input
Register D
V
REF
L AB V
REF
H AB
V
REF
H
AB Sense
V
REF
L
AB Sense
V
OUT
D
V
OUT
C
V
OUT
B
V
OUT
A
V
OUT
B Sense
V
REF
L CD V
REF
H CD
RST LOADDACS
A1
A0
CS
R/W
DATA I/O
16
RSTSEL
AGND DGND
V
OUT
C Sense
V
OUT
D Sense
V
OUT
A Sense
V
CC
V
SS
V
DD
DAC7644
V
REF
L
CD Sense
V
REF
H
CD Sense
For most current data sheet and other product
information, visit www.burr-brown.com
SBAS121