AD421BRZ 4–20 mA Current Loop Transmitter | ADI Industrial Interface IC

AD421BRZ

AD421BRZ – Precision 4–20 mA Current Loop Transmitter

Product Description

Product Overview

The AD421BRZ is a precision 4–20 mA current loop transmitter from Analog Devices, designed for industrial process control and field instrumentation. It converts control signals into a standard 4–20 mA current output, ensuring reliable long-distance transmission and strong noise immunity in harsh industrial environments.

This device is widely used as a critical interface between control systems and field devices in PLC, DCS, and remote monitoring applications.

Key Features & Advantages

Supports standard 4–20 mA industrial current loop
High accuracy output for process control systems
Excellent noise immunity for long-distance transmission
Industrial-grade reliability for harsh environments
Easy integration with PLC and DCS platforms

Typical Applications

Industrial process control systems
PLC and DCS output modules
Smart sensors and transmitters
Industrial automation equipment
Remote monitoring and control systems

Product Specifications

Parameter	Description
Part Number	AD421BRZ
Manufacturer	Analog Devices, Inc.
Product Type	4–20 mA Current Loop Transmitter
Output Signal	4–20 mA
Output Mode	Current output
Accuracy	High precision, industrial-grade
Control Interface	Digital / Analog input
Application Topology	Current loop transmission
Noise Immunity	High common-mode rejection
Supply Voltage	Industrial standard supply
Operating Temperature	Industrial temperature range
Package Type	Surface-mount package (BRZ)
Mounting Style	SMT / SMD
Target Applications	Industrial Automation, Process Control
RoHS Compliance	RoHS compliant