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AD5420

Analog Devices
Part Number AD5420
Manufacturer Analog Devices
Description Current Source DAC
Published Mar 5, 2017
Detailed Description Data Sheet Single-Channel, 12-/16-Bit, Serial Input, 4 mA to 20 mA, Current Source DAC, HART Connectivity AD5410/AD5420...
Datasheet PDF File AD5420 PDF File

AD5420
AD5420

Overview
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 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.
COMPANION PRODUCTS HART Modem: AD5700, AD5700-1 DVCC SELECT FUNCTIONAL BLOCK DIAGRAM DVCC CAP1 CAP2 AV DD CLEAR AD5410/AD5420 R3SENSE R2 R3 BOOST LATCH SCLK SDIN SDO INPUT SHIFT REGISTER AND CONTROL LOGIC 12/16 12-/16-BIT DAC POWERON RESET VREF RSET IOUT FAULT RSET ...


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