DAC7573

www.ti.com DAC7573 SLAS398 – SEPTEMBER 2003 2QUAD, 12-BIT, LOW-POWER, VOLTAGE OUTPUT, I C INTERFACE DIGITAL-TO-ANALOG CONVERTER 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 VDD IOVDD 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 lo...