DAC uses a versatile four-wire SPI at clock rates of up to 50MHz

Analog Devices AD5758 DAC is a single-channel, voltage and current output DAC. This DAC works with a power supply range from -33V (minimum) on AVSS to +33V (maximum) on AV_DD1 with a maximum operating voltage between the two rails of 60V. On-chip DPC minimises package power dissipation. This is accomplished by regulating the supply voltage (V_DPC+) to the VI_OUT output driver circuitry from 5V to 27V using a buck DC-to-DC converter, optimised for minimum on-chip power dissipation. The CHART pin allows a HART signal to be coupled onto the current output. The device uses a versatile four-wire SPI that runs at clock rates of up to 50MHz and is compatible with standard SPI, QSPI, MICROWIRE, DSP, and microcontroller interface standards. The interface also provides an optional SPI CRC and a WDT. The device provides improved diagnostic features from its predecessors, such as output current monitoring and an integrated 12-bit diagnostic ADC. Further robustness is given by the inclusion of a fault protection switch on the VI_OUT, +V_SENSE, and -V_SENSE pins.