GENERAL DESCRIPTION
The AD5383 is a complete, single-supply, 32-channel, 12-bit denseDAC® available in a 100-lead LQFP package. All 32 channels have an on-chip output amplifier with rail-to-rail operation. The AD5383 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 AD5383 features
• Double-buffered parallel interface with a 20 ns WR pulse width.
• SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface with interface speeds in excess of 30 MHz.
• I2C-compatible interface that supports a 400 kHz data transfer rate.
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 mode
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 microelectro-mechanical systems (MEMS)
Control systems
Instrumentation