This datasheet details the AD5737, a quad-channel, 12-bit, serial input DAC with 4 mA to 20 mA output, dynamic power control, and HART connectivity.
The AD5737 is a quad-channel current output DAC designed for process control and actuator control applications. It features 12-bit resolution and monotonicity, with current output ranges of 0 mA to 20 mA, 4 mA to 20 mA, and 0 mA to 24 mA. The device includes on-chip diagnostics, an on-chip reference, and HART network connectivity via dedicated pins on each channel.
The AD5737 utilizes a versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, DSP, and microcontroller standards, operating at clock rates up to 30 MHz. It incorporates dynamic power control to minimize package power dissipation by regulating the output driver voltage from 7.4 V to 29.5 V using an internal DC-to-DC boost converter.
| Resolution | 12 Bits |
|---|---|
| Output Current Ranges | 0 mA to 20 mA, 4 mA to 20 mA, 0 mA to 24 mA |
| Total Unadjusted Error (TUE) | ±0.1% FSR |
| Serial Interface Speed | Up to 30 MHz |
| Temperature Range | -40°C to +105°C |
| Supply Voltage (AVDD) | 10.8 V to 33 V |
| Output Driver Voltage Range | 7.4 V to 29.5 V |
The AD5737 supports three current output ranges: 0 mA to 20 mA, 4 mA to 20 mA, and 0 mA to 24 mA.
Yes, the AD5737 is HART compliant and features a CHART pin on each channel to couple HART signals onto the current output.
The versatile 3-wire serial interface operates at clock rates of up to 30 MHz.