AD569

a FEATURES Guaranteed 16-Bit Monotonicity Monolithic BiMOS II Construction ؎0.01% Typical Nonlinearity 8- and 16-Bit Bus Compatibility 3 ␮s Settling to 16 Bits Low Drift Low Power Low Noise APPLICATIONS Robotics Closed-Loop Positioning High-Resolution ADCs Microprocessor-Based Process Control MIL-STD-883 Compliant Versions Available 16-Bit Monotonic Voltage Output D/A Converter AD569 FUNCTIONAL BLOCK DIAGRAM PRODUCT DESCRIPTION The AD569 is a monolithic 16-bit digital-to-analog converter (DAC) manufactured in Analog Devices’ BiMOS II process. BiMOS II allows the fabrication of low power CMOS logic functions on the same chip as high precision bipolar linear circuitry. The AD569 chip includes two resistor strings, selector switches decoding logic, buffer amplifiers, and double-buffered input latches. The AD569’s voltage-segmented architecture insures 16-bit monotonicity over time and temperature. Integral nonlinearity is maintained at ± 0.01%, while differential nonlinearity is ± 0.0004%. The on-chip, high-speed buffer amplifiers provide a voltage output settling time of 3 µs to within ± 0.001% for a full-scale step. The reference input voltage which determines the output range can be either unipolar or bipolar. Nominal reference range is ± 5 V and separate reference force and sense connections are provided for high accuracy applications. The AD569 can operate with an ac reference in multiplying applications. Data may be loaded into the AD569’s input latches from 8- and 16-b...