Dual-Channel Isolators with isoPower

Integrated DC-to-DC Converter, 50 mW

Data Sheet

ADuM5240/ADuM5241/ADuM5242

Rev. B

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FEATURES

Integrated isolated dc-to-dc converter

Regulated 5 V/10 mA output

Dual dc to 1 Mbps (NRZ) signal isolation channels

Narrow-body, 8-lead SOIC package

RoHS compliant

High temperature operation: 105°C

Precise timing characteristics

3 ns maximum pulse width distortion

3 ns maximum channel-to-channel matching

70 ns maximum propagation delay

High common-mode transient immunity: >25 kV/μs

Safety and regulatory approvals

UL recognition

2500 V rms for 1 minute, per UL 1577

CSA Component Acceptance Notice #5A

VDE certificate of conformity

DIN V VDE V 0884-10 (VDE V 0884-10):2006-12

GENERAL DESCRIPTION

The ADuM524x1 are dual-channel digital isolators with isoPower®

integrated, isolated power. Based on the Analog Devices, Inc.,

i

Coupler® technology, a chip scale dc-to-dc converter provides

up to 50 mW of regulated, isolated power at 5 V, which eliminates

the need for a separate isolated dc-to-dc converter in low power

isolated designs. The Analog Devices chip scale transformer

i

Coupler technology is used both for the isolation of the logic

signals as well as for the dc-to-dc converter. The result is a small

form factor, total isolation solution.

The ADuM524x isolators provide two independent isolation

channels in a variety of channel configurations, operating from

a 5 V input supply. ADuM524x units can be used in combination

with other iCoupler products to achieve greater channel counts.

FUNCTIONAL BLOCK DIAGRAMS

5

7

DECODE

ENCODE

6

DECODE

ENCODE

8

OSC.

REG.

RECT.

Figure 1. ADuM5240

5

7

ENCODE

DECODE

6

DECODE

ENCODE

8

OSC.

REG.

RECT.

Figure 2. ADuM5241

5

7

ENCODE

DECODE

ENCODE

DECODE

6

8

OSC.

REG.

RECT.

Figure 3. ADuM5242