FEATURES
· Micropower Operation: 500 μA at 3 V VDD
· 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
· I2C™ 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

APPLICATIONS
· Process Control
· Data Acquisition Systems
· Closed-Loop Servo Control
· PC Peripherals
· Portable Instrumentation

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 I2C 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 VDD 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 VDD = 5 V reducing to 1 μW in
power-down mode.
TI offers a variety of data converters with I2C
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.