AD569

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 logicfunctions on the same chip as high precision bipolar linear circuitry.The AD569 chip includes two resistor strings, selectorswitches decoding logic, buffer amplifiers, and double-bufferedinput latches.

The AD569's voltage-segmented architecture insures 16-bitmonotonicity over time and temperature. Integral nonlinearity ismaintained at ±0.01%, while differential nonlinearity is±0.0004%. The on-chip, high-speed buffer amplifiers provide avoltage output settling time of 3 ms to within ±0.001% for afull-scale step.

The reference input voltage which determines the output rangecan be either unipolar or bipolar. Nominal reference range is±5 V and separate reference force and sense connections areprovided for high accuracy applications. The AD569 can operatewith an ac reference in multiplying applications.

Data may be loaded into the AD569's input latches from 8- and16-bit buses. The double-buffered structure simplifies 8-bit businterfacing and allows multiple DACs to be loaded asynchronouslyand updated simultaneously. Four TTL/LSTTL/5 VCMOS-compatible signals control the latches: CS, LBE,, HBE,and LDAC

The AD569 is available in five grades: J and K versions arespecified from 0°C to +70°C and are packaged in a 28-pin plasticDIP and 28-pin PLCC package; AD and BD versions arespecified from 25°C to +85°C and are packaged in a 28-pinceramic DIP. The SD version, also in a 28-pin ceramic DIP, isspecified from 55°C to +125°C.