AD660

The AD660 DACPORT™ is a complete 16-bit monolithic D/A converter with an on-board voltage reference, double buffered latches and output amplifier. It is manufactured on Analog Devices' BiMOS II process. This process allows the fabrication of low power CMOS logic functions on the same chip as high precision bipolar linear circuitry.

The AD660's architecture ensures 15-bit monotonicity over time and temperature. Integral and differential nonlinearity is maintained at ±0.003% max. The on-chip output amplifier provides a voltage output settling time of 10 ms to within 1/2 LSB for a full-scale step.

The AD660 has an extremely flexible digital interface. Data can be loaded into the AD660 in serial mode or as two 8-bit bytes. This is made possible by two digital input pins which have dual functions. The serial mode input format is pin selectable to be MSB or LSB first. The serial output pin allows the user to daisy chain several AD660s by shifting the data through the input latch into the next DAC thus minimizing the number of control  lines required to SIN, CS and LDAC. The byte mode input format is also flexible in that the high byte or low byte data can be loaded first. The double buffered latch structure eliminates data skew errors and provides for simultaneous updating of DACs in a multi-DAC system.

The AD660 is available in five grades. AN and BN versions are specified from 40°C to +85°C and are packaged in a 24-pin 300 mil plastic DIP. AR and BR versions are also specified from 40°C to +85°C and are packaged in a 24-pin SOIC. The SQ version is packaged in a 24-pin 300 mil cerdip package and is also available compliant to MIL-STD-883. Refer to the AD660/883B data sheet for specifications and test conditions.