1FEATURES
2345• Bipolar Output: ±2V to ±16.5V
• Unipolar Output: 0V to +33V
• 16-Bit Resolution
• Low Power: 14.4mW/Ch (Bipolar Supply)
• Relative Accuracy: 4 LSB Max
• Low Zero/Full-Scale Error
– Before User Calibration: ±10 LSB Max
– After User Calibration: ±1 LSB
• Flexible System Calibration
• Low Glitch: 4nV-s
• Settling Time: 15μs
• Channel Monitor Output
• Programmable Gain: x4/x6
• Programmable Offset
• SPI™: Up to 50MHz, 1.8V/3V/5V Logic
• Schmitt Trigger Inputs
• Daisy-Chain with Sleep Mode Enhancement
• Packages: QFN-48 (7x7mm), TQFP-64
(10x10mm)

APPLICATIONS
• Automatic Test Equipment
• PLC and Industrial Process Control
• Communications

DESCRIPTION
The DAC8718 is a low-power, octal, 16-bit
digital-to-analog converter (DAC). With a 5V
reference, the output can either be a bipolar ±15V
voltage when operating from dual ±15.5V (or higher)
power supplies, or a unipolar 0V to +30V voltage
when operating from a +30.5V (or higher) power
supply. With a 5.5V reference, the output can either
be a bipolar ±16.5V voltage when operating from dual
±17V (or higher) power supplies, or a unipolar 0V to
+33V voltage when operating from a +33.5V (or
higher) power supply. This DAC provides low-power
operation, good linearity, and low glitch over the
specified temperature range of –40°C to +105°C. This
device is trimmed in manufacturing and has very low
zero-code and gain error. In addition, system level
calibration can be performed to achieve ±1 LSB bipolar zero/full-scale error with bipolar supplies, or
±1 LSB zero code/full-scale error with a unipolar
supply, over the entire signal chain. The output range
can be offset by using the DAC offset register.
The DAC8718 features a standard, high-speed serial
peripheral interface (SPI) that operates at up to 50MHz and is 1.8V, 3V, and 5V logic compatible, to
communicate with a DSP or microprocessor. The
input data of the device are double-buffered. An
asynchronous load input (LDAC) transfers data from
the DAC data register to the DAC latch. The
asynchronous CLR input sets the output of all eight
DACs to AGND. The VMON pin is a monitor output
that connects to the individual analog outputs, the
offset DAC, the reference buffer outputs, and two
external inputs through a multiplexer (mux).
The DAC8718 is pin-to-pin and function-compatible
with the DAC8218 (14-bit) and the DAC7718 (12-bit).