GENERAL DESCRIPTION
The AD5380 is a complete, single-supply, 40-channel, 14-bit denseDAC® available in a 100-lead LQFP package. All 40 channels have an on-chip output amplifier with rail-to-rail operation. The AD5380 includes a programmable internal 1.25 V/2.5 V, 10 ppm/°C reference, an on-chip channel monitor function that multiplexes the analog outputs to a common MON_OUT pin for external monitoring, and an output amplifier boost mode that allows optimization of the amplifier slew rate. The AD5380 contains a double-buffered parallel interface that features a 20 ns WR pulse width, an SPI-, QSPI-, -MICROWIRE, -DSP compatible serial interface with interface speeds in excess of 30 MHz, and an I2C-compatible interface that supports a 400 kHz data transfer rate.

FEATURES
   Guaranteed monotonic
   INL error: ±4 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 monitor

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