FEATURES
· Micropower Operation: 600 μA at 5 V VDD
· Power-On Reset to Zero
· +2.7-V to +5.5-V Analog Power Supply
· 12-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 Sixteen DAC7573s
· 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 DAC7573 is a low-power, quad channel, 12-bit
buffered voltage output DAC. Its on-chip precision
output amplifier allows rail-to-rail output swing to be
achieved. The DAC7573 utilizes an I2C compatible
two wire serial interface supporting high-speed
interface mode with address support of up to sixteen
DAC7573s for a total of 64 channels on the bus.
The DAC7573 requires an external reference voltage
to set the output range of the DAC. The DAC7573
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 in the
device. The DAC7573 contains a power-down feature,
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 3 mW at VDD=5 V reducing to 1 μW in
power-down mode.
The DAC7573 is available in a 16-lead TSSOP
package.