DAC80508 16-Bit, 8-Channel Digital-to-Analog Conve

DAC80508 16-Bit, 8-Channel Digital-to-Analog Conve

Texas Instruments' DAC80508 is a pin-compatible, low-power, eight-channel, buffered voltage-output DAC with 16-bit resolution. The DAC80508 includes a 2.5 V, 5 ppm/°C internal reference, eliminating the need for an external precision reference in most applications. A user selectable gain configuration provides full-scale output voltages of 1.25 V (gain = ½), 2.5 V (gain = 1), or 5 V (gain = 2). The device operates from a single 2.7 V to 5.5 V supply, is specified monotonic, and provides high linearity of ±1 LSB INL.

Communication to the DAC80508 is performed through a serial interface that operates at clock rates up to 50 MHz. The VIO pin enables serial interface operation from 1.7 V to 5.5 V. The DAC80508 flexible interface enables operation with a wide range of industry-standard microprocessors and microcontrollers.

The DAC80508 incorporates a power-on-reset circuit that powers up and maintains the DAC outputs at either zero scale or midscale until a valid code is written to the device. The device consumes a low current of 0.6 mA/channel at 5.5 V, making it suitable for battery-operated equipment. A per-channel power-down feature reduces the device current consumption to 15 µA. The DAC80508 is characterized for operation over the temperature range of -40°C to +125°C and is available in small packages.

Features
  • High-drive capability: 20 mA with 0.5 V from supply rails
  • Performance:
    • INL: ±1% LSB at 16-bit resolution (max.)
    • TUE: ±0.1% of FSR (max.)
  • Low power: 0.6 mA/channel at 5.5 V
  • Integrated 2.5 V precision internal reference:
    • Initial accuracy: ±5 V (max.)
  • Flexible output configuration:
    • User selectable gain: 2, 1, or ½
    • Reset to zero scale or midscale
  • Wide operating range:
    • Power supply: 2.7 V to 5.5 V
    • Temperature range: -40°C to +125°C
  • 50 MHz SPI compatible serial interface:
    • 1.7 V to 5.5 V operation
    • Daisy-chain operation
    • CRC error check
  • Small packages:
    • 3 mm x 3 mm, 16-pin WQFN
    • 2.4 x 2.4 mm, 16-pin DSBGA
Applications
  • Optical networking
  • Wireless infrastructures
  • Industrial automation
  • Data acquisition systems
Manufacturer