AD5420

Data Sheet Single-Channel, 12-/16-Bit, Serial Input, 4 mA to 20 mA, Current Source DAC, HART Connectivity AD5410/AD5420 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 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 minimize the digital isolation required in isolated applications. The device also includes a power-on r...