FEATURES

· Micropower Operation: 500 μA at 3 V VDD

· Fast Update Rate: 188 kSPS

· 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

· Rail-to-Rail Output Buffer Amplifier

· Double-Buffered Input Register

· Address Support for up to Sixteen DAC5573s

· Synchronous Update for up to 64 Channels

· Voltage Translators for all Digital Inputs

· 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 DAC5573 is a low-power, quad channel, 8-bit

buffered voltage output DAC. Its on-chip precision

output amplifier allows rail-to-rail output swing. The

DAC5573 utilizes an I2C-compatible two-wire serial

interface supporting high-speed interface mode with

address support of up to sixteen DAC5573s for a total

of 64 channels on the bus.

The DAC5573 requires an external reference voltage

to set the output range of the DAC. The DAC5573

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 DAC5573 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 3 mW at VDD = 5 V reducing to 1 μW in

power-down mode.

The DAC5573 is available in a 16-lead TSSOP

package.