ADUM7442

PRODUCTION

1 kV RMS Quad-Channel Digital Isolator

Data Sheet (Rev. E) Product Selection Table

Part Models: 4
1ku List Price: Starting From $1.99

Viewing:

Overview

Low power operation
1000 V rms isolation rating
5 V operation

2.25 mA per channel maximum at 0 Mbps to 1 Mbps
11.5 mA per channel maximum at 25 Mbps

3.3 V operation

1.5 mA per channel maximum at 0 Mbps to 1 Mbps
8.25 mA per channel maximum at 25 Mbps

Small 16-lead QSOP package
Bidirectional communication
Up to 25 Mbps data rate (NRZ)
3 V/5 V level translation
High temperature operation: 105°C
High common-mode transient immunity: >15 kV/μs
Safety and regulatory approvals

UL recognition UL 1577: 1000 V rms for 1 minute

The ADuM7440 / ADuM7441 / ADuM7442 are 4-channel digital isolators based on the Analog Devices, Inc., iCoupler^® technology. Combining high speed CMOS and monolithic air core transformer technologies, these isolation components provide outstanding performance characteristics superior to the alternatives, such as optocoupler devices and other integrated couplers.

The ADuM7440 / ADuM7441 / ADuM7442 family of quad 1 kV digital isolation devices is packaged in a small 16-lead QSOP. While most 4-channel isolators come in 16-lead wide SOIC packages, the ADuM7440 / ADuM7441 / ADuM7442 free almost 70% of board space and yet can still withstand high isolation voltage and meet UL regulatory requirements. In addition to the space savings, the ADuM7440 / ADuM7441 / ADuM7442 offer a lower price than 2.5 kV or 5 kV isolators where only functional isolation is needed.

This family, like many Analog Devices isolators, offers very low power consumption, consuming one-tenth to one-sixth the power of comparable isolators at comparable data rates up to 25 Mbps. Despite the low power consumption, all models of the ADuM7440 / ADuM7441 / ADuM7442 provide low pulse width distortion (<5 ns for C grade). In addition, every model has an input glitch filter to protect against extraneous noise disturbances.

The ADuM7440 / ADuM7441 / ADuM7442 isolators provide four independent isolation channels in a variety of channel configurations and two data rates (see the Ordering Guide) up to 25 Mbps. All models operate with the supply voltage on either side ranging from 3.0 V to 5.5 V, providing compatibility with lower voltage systems as well as enabling voltage translation functionality across the isolation barrier. All products also have an output default high logic state in the absence of the input power.

APPLICATIONS

General-purpose, multichannel isolation
SPI interface/data converter isolation
RS-232/RS-422/RS-485 transceivers Industrial field bus isolation

Part Models: 4
1ku List Price: Starting From $1.99

Documentation

Frequently Asked Question 1

FAQ 05/17/2017

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADUM7442ARQZ	16-Lead QSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUM7442ARQZ-RL7	16-Lead QSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUM7442CRQZ	16-Lead QSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADUM7442CRQZ-RL7	16-Lead QSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 29, 2025 - 25_0067 Update Data Sheet Regulatory Information for Select Data Isolator Products
		PCN25_0067_Form Material_Report Datasheet Specification Comparison
ADUM7442ARQZ	PRODUCTION
ADUM7442ARQZ-RL7	PRODUCTION
ADUM7442CRQZ	PRODUCTION
ADUM7442CRQZ-RL7	PRODUCTION
Aug 28, 2017 - 17_0107 Addition of ASE Chungli as an Alternate Assembly Site for Select Isolator Products in 16L and 20L QSOP
		PCN17_0107_Form Material_Report Detailed Change Description Qualification Results Summary
ADUM7442ARQZ	PRODUCTION
ADUM7442ARQZ-RL7	PRODUCTION
ADUM7442CRQZ	PRODUCTION
ADUM7442CRQZ-RL7	PRODUCTION
Aug 19, 2015 - 15_0165 Addition of a Polyimide Layer for ADuM7440/ADuM7441/ADuM7442 Devices
		PCN15_0165_Form Material_Report Qualification Results Summary
ADUM7442ARQZ	PRODUCTION
ADUM7442ARQZ-RL7	PRODUCTION
ADUM7442CRQZ	PRODUCTION
ADUM7442CRQZ-RL7	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
ADUM342E	RECOMMENDED FOR NEW DESIGNS	5.7 kV/3.0 kV rms Quad Digital Isolators

Tools & Simulations

ADuM7442 IBIS Model (A and C Grades) 2

Evaluation Kits

EVAL-ADUMQS

Buy Now View Details

Features and Benefits

Convenient connections for power through screw terminal blocks
Add-on BNC connector for 50 Ω signal sources
On-board signal routing
Support for signal wrap back
Simple signal paths to reduce transmission line effects
Pull-up and pull-down provided for control lines
Support for isoPower
Project area that supports surface-mount and through-hole devices

Product Details

EVAL-ADuMQSEBZ can be used with most iCoupler^® and isoPower(R) isolation products in the 16-lead, wide-body SOIC and QSOP packages. The evaluation board supports the common pad positions for power, ground, and I/O pins.

Supported iCoupler^® Products

ADuM130x
ADuM131x
ADuM140x
ADuM141x
ADuM1510
ADuM240x
ADuM330x
ADuM340x
ADuM344x
ADuM440x
ADuM5000
ADuM520x
ADuM540x
ADuM6000
ADuM620x
ADuM640x
ADuM744x
ADuM7510

Resources

UG-042: Evaluating 16-Lead SOIC and 16-Lead QSOP Digital Isolators
3/5/2010

PLC Demo System
1/1/0001

Latest Discussions

1 Years Ago

2 Years Ago

4 Years Ago

ADUM7442

Overview

Documentation

Data Sheet 1

User Guide 1

Technical Articles 3

Safety and Regulatory Compliance 1