Product Summary

The AD421BRZ is a complete, loop-powered, digital to 4 mA to 20 mA converter. The device is designed to meet the needs of smart transmitter manufacturers in the Industrial Control industry. The AD421BRZ provides a high precision, fully integrated, low cost solution in a compact 16-lead package. The AD421BRZ is ideal for extending the resolution of smart 4 mA to 20 mA transmitters at very low cost.

Parametrics

AD421BRZ absolute maximum ratings: (1)DRIVE, BOOST, COMP to COM : –0.5 V to VCC + 0.5 V; (2)LOOP RTN to COM: –2 V to + 0.5 V; (3)Digital Input Voltage to COM: –0.5 V to VCC + 0.5 V; (4)Operating Temperature Range, Commercial (B Version): –40℃ to +85℃; (5)Storage Temperature Range: –65℃ to +150℃; (6)Junction Temperature: +150℃; (7)Plastic DIP Package, Power Dissipation: 670 mW; (8)θJA Thermal Impedance: 116℃/W; (9)Lead Temperature (Soldering, 10 sec): 260℃; (10)SOIC Package, Power Dissipation: 450 mW; (11)θJA Thermal Impedance: 110℃/W; (12)Lead Temperature, Soldering, Vapor Phase (60 sec): +215℃; Infrared (15 sec): +220℃.

Features

AD421BRZ features: (1)4 mA to 20 mA Current Output; (2)HART Compatible; (3)16-Bit Resolution and Monotonicity; (4)±0.01% Integral Nonlinearity; (5)5 V or 3 V Regulator Output; (6)2.5 V and 1.25 V Precision Reference; (7)750 μA Quiescent Current max; (8)Programmable Alarm Current Capability; (9)Flexible High Speed Serial Interface; (10)16-Lead SOIC and PDIP Packages.

Diagrams

AD421BRZ functional block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
AD421BRZ
AD421BRZ

IC DAC SRL 16BIT 16-SOIC
Data Sheet
0-1: $8.32
1-10: $7.56
10-100: $6.43
100-250: $5.86
250-500: $5.48
500-1000: $5.04
AD421BRZRL
AD421BRZRL

IC DAC 16BIT LOOP 4-20MA 16SOIC
Data Sheet
0-1000: $5.04
AD421BRZRL7
AD421BRZRL7

IC DAC 16BIT LOOP 4-20MA 16SOIC
Data Sheet
0-1: $8.58
1-10: $7.79
10-25: $7.22
25-100: $6.62