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 to 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 3mW at VDD=5 V reducing to 1 µW in power-down mode.

The DAC7573 is available in a 16-lead TSSOP package.

• 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

I2C is a trademark of Philips Corporation.