The DAC5574 is a low-power, quad channel, 8-bit buffered voltage output DAC. Its on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The DAC5574 utilizes an I²C compatible two wire serial interface supporting high-speed interface mode with address support of up to four DAC5574s for a total of 16 channels on the bus.

The DAC5574 uses VDD and GND to set the output range of the DAC. The DAC5574 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 DAC5574 contains a per-channel power-down feature, accessed via the internal control register, reducing 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.

TI offers a variety of data converters with I²C interface. See DACx57x family of 16/12/10/8 bit, single and quad channel DACs. Also see ADS7823 and ADS1100, 12-bit octal channel and 16-bit single channel ADCs.

• Micropower Operation: 500 µA at 3 V VDD
• Fast Update Rate: 188 kSPS
• Per-channel Power-down Capability
• 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
• On-Chip Output Buffer Amplifier, Rail-to-Rail Operation
• Double-Buffered Input Register
• Address Support for up to Four DAC5574s
• Synchronous Update Support for up to 16 Channels
• Operation From –40°C to 105°C
• Small 10 Lead MSOP Package
• APPLICATIONS
  • Process Control
  • Data Acquisition Systems
  • Closed-Loop Servo Control
  • PC Peripherals
  • Portable Instrumentation

I²C is a trademark of Philips Corporation.