Analog Devices Inc. AD5421BCPZ-REEL7

Description
The AD5421 is a 16-bit, loop-powered, 4 mA to 20 mA digital-to-analog converter (DAC) designed for industrial process control applications. It offers high precision, low cost, and compact packaging in TSSOP and LFCSP options. The DAC includes a regulated voltage output for powering itself and other devices, eliminating the need for a discrete regulator and voltage reference.

Features
16-bit resolution and monotonicity
Pin-selectable NAMUR-compliant ranges:
4 mA to 20 mA
3.8 mA to 21 mA
3.2 mA to 24 mA
NAMUR-compliant alarm currents:
Downscale alarm current = 3.2 mA
Upscale alarm current = 22.8 mA/24 mA
Total unadjusted error (TUE): 0.05% maximum
INL error: 0.0035% FSR maximum
Output TC: 3 ppm/°C typical
Quiescent current: 300 μA maximum
Flexible SPI-compatible serial digital interface with Schmitt triggered inputs
On-chip fault alerts via FAULT pin or alarm current
Automatic readback of fault register on each write cycle
Slew rate control function
Gain and offset adjust registers
On-chip reference TC: 4 ppm/°C maximum
Selectable regulated voltage output
Loop voltage range: 5.5 V to 52 V
Temperature range: -40°C to 105°C

Applications
Industrial process control
4 mA to 20 mA loop-powered transmitters
Smart transmitters
HART network connectivity