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SBAS263 − NOVEMBER 2003
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FEATURES
DESCRIPTION
D
D
D
D
D
Low Glitch: 1nV-s (typ)
The DAC7654 is
a
16-bit, quad voltage output,
digital-to-analog converter (DAC) with 16-bit monotonic
performance over the specified temperature range. It
accepts 24-bit serial input data, has double-buffered DAC
input logic (allowing simultaneous update of all DACs),
and provides a serial data output for daisy-chaining
multiple DACs. Programmable asynchronous reset clears
all registers to a mid-scale code of 8000h or to a zero-scale
of 0000h. The DAC7654 can operate from a single +5V
supply or from +5V and –5V supplies.
Low Power: 18mW
Unipolar or Bipolar Operation
Settling Time: 12µs to 0.003%
16-Bit Linearity and Monotonicity:
–40°C to +85°C
Programmable Reset to Mid-Scale or
Zero-Scale
D
D
D
D
D
Double-Buffered Data Inputs
Internal Bandgap Voltage Reference
Power-On Reset
Low power and small size per DAC make the DAC7654
ideal for automatic test equipment, DAC-per-pin
programmers, data acquisition systems, and closed-loop
servo-control. The DAC7654 is available in an LQFP
package and is specified for operation over the –40°C to
+85°C temperature range.
3V to 5V Logic Interface
APPLICATIONS
IO V DD
V DD
V SS
V CC
D
D
D
D
D
Process Control
DAC7654
Closed-Loop Servo-Control
Motor Control
V
H A and B
REF
V
V
L
Bandgap
Voltage Reference
REF
V
L A and B
REF
H
Data Acquisition Systems
DAC-per-Pin Programmers
REF
V
V
V
A Sense 2
A Sense 1
A
OUT
OUT
OUT
SDI
Input
DAC
Register A
DAC A
DAC B
DAC C
DAC D
Shift
Register
Register A
OFSR1A
OFSR2A
SDO
V
V
V
B Sense 2
OUT
OUT
OUT
Input
DAC
Register B
B Sense 1
B
Register B
OFSR1B
OFSR2B
V
V
V
C Sense 2
C Sense 1
C
OUT
OUT
OUT
Input
DAC
Register C
CS
Register C
CLOCK
RST
OFSR1C
OFSR2C
Control
Logic
RSTSEL
LDAC
V
V
V
D Sense 2
OUT
OUT
OUT
Input
DAC
Register D
D Sense 1
D
Register D
LOAD
OFSR1D
OFSR2D
V
L C and D
REF
V
H C and D
REF
A GND
D GND
This device has ESD-CDM sensitivity and special handling precautions must be taken.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
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ꢜꢘ ꢌ ꢊꢈꢥ ꢅ ꢄꢌ ꢔ ꢑꢘ ꢌ ꢥ ꢏ ꢤ ꢤ ꢄꢔ ꢎ ꢊꢌ ꢏ ꢤ ꢔꢌꢅ ꢔꢏ ꢥꢏ ꢤꢤ ꢉꢘ ꢄꢍ ꢫ ꢄꢔꢥ ꢍꢈꢊ ꢏ ꢅꢏ ꢤꢅꢄ ꢔꢎ ꢌꢢ ꢉꢍ ꢍ ꢑꢉ ꢘ ꢉꢣ ꢏꢅꢏ ꢘ ꢤꢧ
Copyright 2003, Texas Instruments Incorporated
www.ti.com