The AD5758 is a single-channel, voltage and current output digital- to-analog converter (DAC) that operates with a power supply range from −33 V (minimum) on AVSS to +33 V (maximum) on AVDD1 with a maximum operating voltage between the two rails of 60 V. On-chip dynamic power control (DPC) minimizes package power dissipation, which is achieved by regulating the supply voltage (VDPC+) to the VIOUT output driver circuitry from 5 V to 27 V using a buck dc-to-dc converter, optimized for minimum on-chip power dissipation. The CHART pin enables a HART® signal to be coupled onto the current output. The device uses a versatile 4-wire serial peripheral interface (SPI) that operates at clock rates of up to 50 MHz and is compatible with standard SPI, QSPI™, MICROWIRE™, DSP, and microcontroller interface standards. The interface also features an optional SPI cyclic redundancy check (CRC) and a watchdog timer (WDT). The AD5758 offers improved diagnostic features from its predecessors, such as output current monitoring and an integrated 12-bit diagnostic analog-to-digital converter (ADC). Additional robustness is provided by the inclusion of a fault protection switch on the VIOUT, +VSENSE, and −VSENSE pins.
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AD5758:
1. Range of diagnostic features, including integrated ADC.
2. DPC, using an integrated buck dc-to-dc converter for thermal management, enabling higher channel count in smaller size module housing.
3. Programmable power control (PPC) mode to enable faster settling time (15 μs typical).
4. 16-bit performance.
5. HART compliant.
AD5758:
16-bit resolution and monotonicity
DPC for thermal management
Current/voltage output available on a single terminal
Current output ranges: 0 mA to 20 mA, 4 mA to 20 mA, 0 mA to 24 mA, ±20 mA, ±24 mA, −1 mA to +22 mA
Voltage output ranges (with 20% overrange): 0 V to 5 V, 0 V to 10 V, ±5 V, and ±10 V User-programmable offset and gain
Advanced on-chip diagnostics, including a 12-bit ADC
On-chip reference
Robust architecture, including output fault protection
−40°C to +11°5C temperature range
32-lead, 5 mm × 5 mm LFCSP package
AD5758:
Process control
Actuator control
Channel isolated analog outputs
Programmable logic controller (PLC) and distributed control systems (DCS) applications
HART network connectivity
http://www.hkchipsource.com/manufacturer/analog-devices.html