DAC5574
www.ti.com
SLAS407 – DECEMBER 2003
QUAD, 8-BIT, LOW-POWER, VOLTAGE OUTPUT,
I C INTERFACE DIGITAL-TO-ANALOG CONVERTER
2
FEATURES
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Micropower
Operation: 500 µA at 3 V V
DD
Fast Update Rate: 188 kSPS
Per-channel Power-down Capability
Power-On Reset to Zero
2.7-V to 5.5-V Analog Power Supply
8-bit Monotonic
I
2
C™ Interface Up to 3.4 Mbps
Data Transmit Capability
On-Chip Output Buffer Amplifier, Rail-to-Rail
Operation
Double-Buffered Input Register
Address Support for up to Four DAC5574s
Synchronous Update Support for up to 16
Channels
Operation From –40°C to 105°C
Small 10 Lead MSOP Package
DESCRIPTION
The DAC5574 is a low-power, quad channel, 8-bit
buffered voltage output DAC. Its on-chip precision
output amplifier allows rail-to-rail output swing to be
achieved. The DAC5574 utilizes an I
2
C compatible
two wire serial interface supporting high-speed
interface mode with address support of up to four
DAC5574s for a total of 16 channels on the bus.
The DAC5574 uses V
DD
and GND to set the output
range of the DAC. The DAC5574 incorporates a
power-on-reset circuit that ensures that the DAC
output powers up at zero volts and remains there until
a valid write takes place to the device. The DAC5574
contains a per-channel power-down feature, ac-
cessed via the internal control register, reducing the
current consumption of the device to 200 nA at 5 V.
The low power consumption of this part in normal
operation makes it ideally suited to portable battery
operated equipment. The power consumption is less
than 3mW at V
DD
= 5 V reducing to 1 µW in
power-down mode.
TI offers a variety of data converters with I
2
C
interface. See DACx57x family of 16/12/10/8 bit,
single and quad channel DACs. Also see ADS7823
and ADS1100, 12-bit octal channel and 16-bit single
channel ADCs.
APPLICATIONS
Process Control
Data Acquisition Systems
Closed-Loop Servo Control
PC Peripherals
Portable Instrumentation
V
DD
Data
Buffer A
DAC
Register A
DAC A
V
OUT
A
V
OUT
B
V
OUT
C
Data
Buffer D
14
DAC
Register D
DAC D
V
OUT
D
SCL
SDA
I
2
C
Block
8
Buffer
Control
Register
Control
Power-Down
Control Logic
Resistor
Network
A0
A1
GND
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.
2
C is a trademark of Philips Corporation.
I
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2003, Texas Instruments Incorporated