GENERAL DESCRIPTION
The AD5381 is a complete, single-supply, 40-channel, 12-bit denseDAC® available in a 100-lead LQFP package. All 40 channels have an on-chip output amplifier with rail-to-rail operation.

FEATURES
   Guaranteed monotonic
   INL error: ±1 LSB max
   On-chip 1.25 V/2.5 V, 10 ppm/°C reference
   Temperature range: –40°C to +85°C
   Rail-to-rail output amplifier
   Power-down
   Package type: 100-lead LQFP (14 mm × 14 mm)
   User interfaces
      Parallel
      Serial (SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible,
         featuring data readback)
      I2C®-compatible
   Robust 6.5 kV HBM and 2 kV FICDM ESD rating

INTEGRATED FUNCTIONS
   Channel monitor
   Simultaneous output update via LDAC
   Clear function to user-programmable code
   Amplifier boost mode to optimize slew rate
   User-programmable offset and gain adjust
   Toggle mode enables square wave generation
   Thermal monitors

APPLICATIONS
   Variable optical attenuators (VOAs)
   Level setting (ATE)
   Optical micro-electro-mechanical systems (MEMs)
   Control systems
   Instrumentation