DAC8574IPWR

The DAC8574 is a low-power, quad channel, 16-bit buffered voltage output DAC. Its on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The DAC8574 utilizes an I²C compatible two wire serial interface supporting high-speed interface mode with address support of up to sixteen DAC8574s for a total of 64 channels on the bus. The DAC8574 requires an external reference voltage to set the output range of the DAC. The DAC8574 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 DAC8574 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 5 mW at VDD = 5V reducing to 1 μW in power-down mode. The DAC8574 is available in a 16-lead TSSOP package.

Applications

• Process Control
• Data Acquisition Systems
• Closed-Loop Servo Control
• PC Peripherals
• Portable Instrumentation

Key features

• Micropower Operation: 950 μA at 5 V VDD
• Power-On Reset to Zero
• +2.7 to +5.5 V Analog Power Supply
• 16-Bit Monotonic
• Settling Time: 10 μs to ±0.003% FSR
• 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 DAC8574s Synchronous Update Support for up to 64 Channels
• Operation From -40°C to 105°C
• Small 16-Lead TSSOP Package