40-Channel 3 V/5 V Single-Supply 12-Bit Voltage-Output DAC
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.
- Variable optical attenuators (VOAs)
- Level setting (ATE)
- Optical micro-electro-mechanical systems (MEMs)
- Control systems
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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Solutions Bulletins & Brochures
Digital to Analog Converters ICs Solutions Bulletin
Software Calibration Reduces D/A Converter Offset and Gain Errors
by Ken Kavanagh, Analog Devices, Inc. (Planet Analog, 5/18/2006)
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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