The AD5757 is a quad, current output DAC that operates with a power supply range from 10.8 V to 33 V. On-chip dynamic power control minimizes package power dissipation by regulat-ing the voltage on the output driver from 7.4 V to 29.5 V using a dc-to-dc boost converter optimized for minimum on-chip power dissipation.
Each channel has a corresponding CHART pin so that HART signals can be coupled onto the current output of the AD5757.
The part uses a versatile 3-wire serial interface that operates at clock rates up to 30 MHz and that is compatible with standard SPI, QSPI™, MICROWIRE™, DSP and microcontroller interface standards. The interface also features optional CRC-8 packet error checking as well as a watchdog timer that monitors activity on the interface.
- 16-Bit Resolution and Monotonicity
- Dynamic Power Control for Thermal Management
- IOUT Range: 0ma-20ma, 4mA–20mA or 0mA–24mA
- ±0.05% TUE maximum
- User programmable Offset and Gain
- On Chip Diagnostics
- On-Chip Reference (±10 ppm/°C typ)
- -40°C to +105°C Temperature Range
- Applications:
- Process control
- Actuator Control
- PLC’s
- HART Network Connectivity
