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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, 1 0 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 device 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 I2 C-compatible interface that supports a 400 kHz data transfer rate.

Features

1. Guaranteed monotonic
2. INL error: ±4 LSB max
3. On-chip 1.25 V/2.5 V, 10 ppm/°C reference
4. Temperature range: –40°C to +85°C
5. Rail-to-rail output amplifier
6. Robust 6.5 kV HBM and 2 kV FICDM ESD rating

Function 

1. Channel monitor
2. Simultaneous output update via LDAC
3. Clear function to user programmable code
4. Amplifier boost mode to optimize slew rate
5. User programmable offset and gain adjust
6. Toggle mode enables square wave generation
7. Thermal monitor

Application

1. Variable optical attenuators (VOA)
2. Level setting (ATE)
3. Optical micro-electro-mechanical systems (MEMS)
4. Control systems
5. Instrumentation