Product Details
●The AD5381 is a complete, single-supply, 40-channel, 12-Bit DAC available in a 100-lead LQFP package. All 40 channels have an on-chip output amplifier wiht rail-to-rail operarion. The AD5381 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, which allows optimization of the amplifier slew rate. The AD5381 contains a double-buffered parallel interface featuring 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.
●An input register followed by a DAC register provides double buffering, allowing the DAC outputs to be updated independently or simultaneously using the LDAC input.
●Each channel has a programmable gain and offset adjust register that allows the user to fully calibrate any DAC chan-nel. Power consumption is typically 0.25 mA/channel with boost mode disabled.
●Applications
● Variable optical attenuators (VOAs)
● Level setting (ATE)
● Optical micro-electro-mechanical systems (MEMs)
● Control systems
● Instrumentation
●### Features and Benefits
● Guaranteed Monotonic
● INL error: ±1 LSB max
● On-Chip 1.25 V/2.5 V Reference With 10 ppm/ºC TempCo
● 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
