GENERAL DESCRIPTION

The AD5372/AD5373 contain 32 16-/14-bit DACs in 64-lead LQFP and LFCSP packages. The devices provide buffered voltage outputs with a nominal span of 4× the reference voltage. The gain and offset of each DAC can be independently trimmed to remove errors. For even greater flexibility, the device is divided into four groups of eight DACs. Two offset DACs allow the output range of the groups to be altered. Group 0 can be adjusted by Offset DAC 0, and Group 1 to group 3 can be adjusted by Offset DAC 1. The AD5372/AD5373 offer guaranteed operation over a wide supply range: VSSfrom −16.5 V to −4.5 V and VDD from 9 V to 16.5 V. The output amplifier headroom requirement is 1.4 Voperating with a load current of 1 mA.

FEATURES

32-channel DAC in a 64-lead LQFP and 64-lead LFCSP

AD5372/AD5373 guaranteed monotonic to 16/14 bits

Maximum output voltage span of 4 × VREF (20 V)

Nominal output voltage range of −4 V to +8 V

Multiple, independent output voltage spans available

System calibration function allowing user-programmable

offset and gain

Channel grouping and addressing features

Thermal shutdown function

DSP/microcontroller-compatible serial interface

SPI serial interface

2.5 V to 5.5 V JEDEC-compliant digital levels

Digital reset (RESET)

Clear function to user-defined SIGGNDx

Simultaneous update of DAC outputs

APPLICATIONS

Level setting in automatic test equipment (ATE)

Variable optical attenuators (VOA)

Optical switches

Industrial control systems

Instrumentation