ADuM1400 ADuM1401 ADuM1402 Quad-Channel Digital Isolators Data Sheet Manual

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Quad-Channel Digital Isolators

ADu M1400/ADu M1401/ADu M1402

GENERAL DESCRIPTION

FEATURES Low power operation The ADu M140x1 are 4-channel digital isolators based on 5 V operation

Analog Devices’ i Coupler® technology. Combining high speed

1.0 m A per channel max @ 0 Mbps to 2 Mbps

CMOS and monolithic air core transformer technology, these

3.5 m A per channel max @ 10 Mbps

6- 0- isolation components provide outstanding performance charac-

31 m A per channel max @ 90 Mbps

teristics superior to alternatives such as optocoupler devices.

3 V operation 0.7 m A per channel max @ 0 Mbps to 2 Mbps

By avoiding the use of LEDs and photodiodes, i Coupler devices

2.1 m A per channel max @ 10 Mbps

remove the design difficulties commonly associated with

20 m A per channel max @ 90 Mbps

optocouplers. The typical optocoupler concerns regarding

Bidirectional communication

uncertain current transfer ratios, nonlinear transfer functions,

3 V/5 V level translation

and temperature and lifetime effects are eliminated with the

High temperature operation: 105°C

simple i Coupler digital interfaces and stable performance

High data rate: dc to 90 Mbps (NRZ)

characteristics. The need for external drivers and other discretes

Precise timing characteristics

is eliminated with these i Coupler products. Furthermore,

2 ns max pulse width distortion

2 ns max channel-to-channel matching i Coupler devices consume one-tenth to one-sixth the power of High common-mode transient immunity: >25 k V/μs optocouplers at comparable signal data rates.

Output enable function

The ADu M140x isolators provide four independent isolation

Wide body 16-lead SOIC package, Pb-free models available

channels in a variety of channel configurations and data rates

Safety and regulatory approvals

UL recognition: 2500 V rms for 1 minute per UL 1577 (see the Ordering Guide). All models operate with the supply

CSA component acceptance notice #5A voltage on either side ranging from 2.7 V to 5.5 V, providing VDE certificate of conformity compatibility with lower voltage systems as well as enabling a

DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01 voltage translation functionality across the isolation barrier. In DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000 addition, the ADu M140x provides low pulse width distortion VIORM = 560 V peak (<2 ns for CRW grade) and tight channel-to-channel matching

APPLICATIONS (<2 ns for CRW grade). Unlike other optocoupler alternatives, the ADu M140x isolators have a patented refresh feature that

General-purpose multichannel isolation

ensures dc correctness in the absence of input logic transitions

SPI® interface/data converter isolation

RS-232/RS-422/RS-485 transceiver and during power-up/power-down conditions.

Industrial field bus isolation

1 Protected by U.S. Patents 5,952,849 and 6,291,907.

FUNCTIONAL BLOCK DIAGRAMS

VDD1 6- 0- VDD2 VDD1 VDD2 VDD1 VDD2

GND1 GND2 GND1 GND2 GND1 GND2

VIA ENCODE DECODE VOA VIA ENCODE DECODE VOA VIA ENCODE DECODE VOA

VIB ENCODE DECODE VOB VIB ENCODE DECODE VOB VIB ENCODE DECODE VOB

VIC ENCODE DECODE VOC VIC ENCODE DECODE VOC VOC DECODE ENCODE VIC

VID ENCODE DECODE VOD VOD DECODE ENCODE VID VOD DECODE ENCODE VID

NC VE2 VE1 VE2 VE1 VE2

GND1 GND2 GND1 GND2 GND1 GND2

Figure 1. ADu M1400 Functional Block Diagram Figure 2. ADu M1401 Functional Block Diagram Figure 3. ADu M1402 Functional Block Diagram

Rev. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use.

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