Part Number: AD5421
Function: 16-Bit, Serial Input, Loop-Powered, 4 mA to 20 mA DAC
Package: TSSOP and LFCSP Type
Manufacturer: Analog Devices
Pinouts:
Description
The AD5421 is a complete, loop-powered, 4 mA to 20 mA digital-to-analog converter (DAC) designed to meet the needs of smart transmitter manufacturers in the industrial control indust r y. The DAC provides a high precision, fully integrated, low cost solution in compact TSSOP and LFCSP packages. The AD5421 includes a regulated voltage output that is used to power itself and other devices in the transmitter. This regulator provides a regulated 1.8 V to 12 V output voltage. The AD5421 also contains 1.22 V and 2.5 V references, thus eliminating the need for a discrete regulator and voltage reference.
Features
1. 16-bit resolution and monotonicity
2. NAMUR-compliant alarm currents
(1) Downscale alarm current = 3.2 mA
(2) Upscale alarm current = 22.8 mA/24 mA
3. Total unadjusted error (TUE): 0.05% maximum
4. INL error: 0.0035% FSR maximum
5. Output TC: 3 ppm/°C typical
6. Quiescent current: 300 µA maximum
7. Flexible SPI-compatible serial digital interface with Schmitt triggered inputs
8. On-chip fault alerts via FAULT pin or alarm current
9. Automatic readback of fault register on each write cyc
Applications:
1. Industrial process control
2. 4 mA to 20 mA loop-powered transmitters
3. Smart transmitters
4. HART network connectivity
Other data sheets are available within the file:
AD5421ACPZ-REEL7, AD5421BCPZ-REEL7, AD5421BREZ, AD5421BREZ-REEL