GENERAL DESCRIPTION
The AD5378 contains 32 14-bit DACs in one CSPBGA package. The AD5378 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 AD5378 guarantees operation over a wide VSS/VDDsupply 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
   32-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 (CLRpin)
   Simultaneous update of DAC outputs (LDACpin)
   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 (RESETpin and soft reset function)

APPLICATIONS
   Level setting in automatic test equipment (ATE)
   Variable optical attenuators (VOAs)
   Optical switches
   Industrial control systems
APPLICATIONS
Level setting in automatic test equipment (ATE)
Variable optical attenuators (VOAs)
Optical switches
Industrial control systems

VCC= 2.7 V to 5.5 V; VDD= 11.4 V to 16.5 V; VSS= −11.4 V to −16.5 V; VREF(+) = +5 V; VREF(−) = −3.5 V; AGND = DGND = REFGND = 0 V; VBIAS= 5 V; CL= 200 pF to GND; RL= 11 kΩ to 3 V; gain = 1; offset = 0 V; all specifications TMINto TMAX, unless otherwise noted.