Analog Devices AD5383 Product Info

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.

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 channel. With boost off, power consumption is typically 0.25 mA/channel.

APPLICATIONS

• Variable optical attenuators (VOA)
• Level setting (ATE)
• Optical microelectro-mechanical systems (MEMS)
• Control systems
• Instrumentation