GENERAL DESCRIPTION

The AD5379 contains 40 14-bit DACs in one CSPBGA package. The AD5379 provides a bipolar output range determined by the voltages applied to the VREF(+) and VREF(−) inputs. The maximum output voltage span is 17.5 V, corresponding to a bipolar output range of −8.75 V to +8.75 V, and is achieved with reference voltages of VREF(−) = −3.5 V and VREF(+) = +5 V.

FEATURES

40-channel DAC in 13 mm × 13 mm 108-lead CSPBGA

Guaranteed monotonic to 14 bits

Buffered voltage outputs

Output voltage span of 3.5 V × VREF(+)

Maximum output voltage span of 17.5 V

System calibration function allowing user-programmable

offset and gain

Pseudo differential outputs relative to REFGND

Clear function to user-defined REFGND (CLR pin)

Simultaneous update of DAC outputs (LDAC pin)

DAC increment/decrement mode

Channel grouping and addressing features

Interface options:

Parallel interface

DSP/microcontroller-compatible, 3-wire serial interface

2.5 V to 5.5 V JEDEC-compliant digital levels

SDO daisy-chaining option

Power-on reset

Digital reset (RESET pin and soft reset function)

APPLICATIONS

Level setting in automatic test equipment (ATE)

Variable optical attenuators (VOA)

Optical switches

Industrial control systems