®
DAC7621
®
DAC7621
For most current data sheet and other product
information, visit www.burr-brown.com
12-Bit, Parallel Input
DIGITAL-TO-ANALOG CONVERTER
DESCRIPTION
FEATURES
The DAC7621 is a 12-bit digital-to-analog converter
(DAC) with guaranteed 12-bit monotonicity perfor-
mance over the industrial temperature range. It re-
quires a single +5V supply and contains an input
register, latch, 2.435V reference, DAC, and high speed
rail-to-rail output amplifier. For a full-scale step, the
output will settle to 1 LSB within 7µs. The device
consumes 2.5mW (0.5mA at 5V).
● LOW POWER: 2.5mW
● FAST SETTLING: 7µs to 1 LSB
● 1mV LSB WITH 4.095V FULL-SCALE
RANGE
● COMPLETE WITH REFERENCE
● 12-BIT LINEARITY AND MONOTONICITY
OVER INDUSTRIAL TEMP RANGE
The parallel interface is compatible with a wide variety
of microcontrollers. The DAC7621 accepts a 12-bit
parallel word, has a double-buffered input logic struc-
ture and provides data readback. In addition, two
control pins provide a chip select (CS) function and
asynchronous clear (CLR) input. The CLR input can
be used to ensure that the DAC7621 output is 0V on
power-up or as required by the application.
● ASYNCHRONOUS RESET TO 0V
APPLICATIONS
● PROCESS CONTROL
● DATA ACQUISITION SYSTEMS
● CLOSED-LOOP SERVO-CONTROL
● PC PERIPHERALS
The DAC7621 is available in a 20-lead SSOP package
and is fully specified over the industrial temperature
range of –40°C to +85°C.
● PORTABLE INSTRUMENTATION
VDD
Ref
12-Bit DAC
12
VOUT
CLR
DAC Register
12
LOADDAC
Input Register
12
CS
I/O Buffer
R/W
DAC7621
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
DGND
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
•
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FAX: (520) 889-1510 Immediate Product Info: (800) 548-6132
•
© 1998 Burr-Brown Corporation
PDS-1502B
Printed in U.S.A. March, 1999