1 Features
1• Performance
– INL: ±1 LSB Maximum at 16-Bit Resolution
– TUE: ±0.1% of FSR Maximum
• Integrated 2.5 V Precision Internal Reference
– Initial Accuracy: ±5 mV Maximum
– Low Drift: 2 ppm/°C Typical, DAC80508
• High Drive Capability: 20 mA with 0.5 V from
Supply Rails
• Flexible Output Configuration
– User Selectable Gain: 2, 1 or ½
– Reset to Zero Scale or Midscale
– Clear Output Function: DACx0508C
• 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
• Low Power: 0.6 mA/Channel at 5.5 V
• Small Packages:
– 3 mm × 3 mm, 16-Pin WQFN
– 2.4 mm x 2.4 mm, 16-Pin DSBGA

2 Applications
• Optical Networking
• Wireless Infrastructure
• Industrial Automation
• Data Acquisition Systems

3 Description
The DACx0508 is a pin-compatible family of low
power, eight-channel, buffered voltage-output, digitalto-
analog converters (DACs) with 16-, 14- and 12-bit
resolution. The DACx0508 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 DACx0508 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 DACx0508 flexible
interface enables operation with a wide range of
industry-standard microprocessors and
microcontrollers.
The DACx0508 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 low
current of 0.6 mA/channel at 5.5 V, making it suitable
for battery-operated equipment. A per-channel powerdown
feature reduces the device current consumption
to 15 μA.
The DACx0508 is characterized for operation over
the temperature range of –40°C to 125°C and is
available in small packages.