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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. The AD5379 offers guaranteed operation over a wide VSS/VDD supply range from ±11.4 V to ±16.5 V. The output amplifier headroom requirement is 2.5 V operating with a load current of 1.5 mA, and 2 V operating with a load current of 0.5 mA.

Features

1. 40-channel DAC 
2. Guaranteed monotonic to 14 bits
3. Buffered voltage outputs
(1)  Output voltage span of 3.5 V × VREF(+)
(2)  Maximum output voltage span of 17.5 V
4. System calibration function allowing user-programmable offset and gain
5. Pseudo differential outputs relative to REFGND
6. Clear function to user-defined REFGND (CLRpin)
7. Simultaneous update of DAC outputs (LDACpin)
8. Digital reset (RESETpin and soft reset function)

Applications 

1. Level setting in automatic test equipment (ATE)
2. Variable optical attenuators (VOA)
3. Optical switches
4. Industrial control systems