FEATURES
· Micropower Operation: 950 μA at 5 V VDD
· Power-On Reset to Zero
· +2.7-V to +5.5-V Analog Power Supply
· 16-Bit Monotonic
· Settling Time: 10μs to ±0.003% FSR
· 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 Sixteen DAC8574s
· Synchronous Update Support for up to 64
Channels
· Operation From –40°C to 105°C
· Small 16-Lead TSSOP Package

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

DESCRIPTION
The DAC8574 is a low-power, quad channel, 16-bit
buffered voltage output DAC. Its on-chip precision
output amplifier allows rail-to-rail output swing to be
achieved. The DAC8574 utilizes an I2C compatible
two wire serial interface supporting high-speed
interface mode with address support of up to sixteen
DAC8574s for a total of 64 channels on the bus.
The DAC8574 requires an external reference voltage
to set the output range of the DAC. The DAC8574
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 DAC8574 contains a power-down fea- ture, accessed via the internal control register, that
reduces 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 5 mW at VDD = 5 V reducing to 1 μW in
power-down mode.
The DAC8574 is available in a 16-lead TSSOP
package.