GENERAL DESCRIPTION

The AD5410/AD5420 are low cost, precision, fully integrated 12-/16-bit converters offering a programmable current source output designed to meet the requirements of industrial process control applications. The output current range is programmable at 4 mA to 20 mA, 0 mA to 20 mA, or an overrange function of 0 mA to 24 mA. The output is open-circuit protected. The device operates with a power supply (AVDD) range from 10.8 V to 60 V. Output loop compliance is 0 V to AVDD − 2.5 V.

The flexible serial interface is SPI, MICROWIRE™, QSPI™, and DSP compatible and can be operated in 3-wire mode to mini mize the digital isolation required in isolated applications. The device also includes a power-on reset function, ensuring that the device powers up in a known state, and an asynchronous CLEAR pin that sets the output to the low end of the selected current range.

The total unadjusted error is typically ±0.01% FSR.

FEATURES

  12-/16-bit resolution and monotonicity

  Current output ranges: 4 mA to 20 mA, 0 mA to 20 mA, or

     0 mA to 24 mA

     ±0.01% FSR typical total unadjusted error (TUE)

     ±3 ppm/°C typical output drift

  Flexible serial digital interface

  On-chip output fault detection

  On-chip reference (10 ppm/°C maximum)

  Feedback/monitoring of output current

  Asynchronous clear function

  Power supply (AVDD) range

     10.8 V to 40 V; AD5410AREZ/AD5420AREZ

     10.8 V to 60 V; AD5410ACPZ/AD5420ACPZ

  Output loop compliance to AVDD − 2.5 V

  Temperature range: −40°C to +85°C

  24-lead TSSOP and 40-lead LFCSP packages

APPLICATIONS

  Process control

  Actuator control

  PLC

  HART network connectivity