DAC7621 Datasheet, PDF (1/11 Pages) Burr-Brown (TI) – 12-Bit, Parallel Input DIGITAL-TO-ANALOG CONVERTER

®
DAC7621 _®
DAC7621
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12-Bit, Parallel Input
DIGITAL-TO-ANALOG CONVERTER
FEATURES
q LOW POWER: 2.5mW
q FAST SETTLING: 7µs to 1 LSB
q 1mV LSB WITH 4.095V FULL-SCALE
RANGE
q COMPLETE WITH REFERENCE
q 12-BIT LINEARITY AND MONOTONICITY
OVER INDUSTRIAL TEMP RANGE
q ASYNCHRONOUS RESET TO 0V
APPLICATIONS
q PROCESS CONTROL
q DATA ACQUISITION SYSTEMS
q CLOSED-LOOP SERVO-CONTROL
q PC PERIPHERALS
q PORTABLE INSTRUMENTATION
DESCRIPTION
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).
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.
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.
V_DD
Ref
CLR
LOADDAC
CS
R/W
12-Bit DAC
12
DAC Register
12
Input Register
12
I/O Buffer
V_OUT
DAC7621
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
DGND
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© 1998 Burr-Brown Corporation
PDS-1502B
Printed in U.S.A. March, 1999