GENERAL DESCRIPTION

The ADuM1240/ADuM1241/ADuM1245/ADuM12461 are micropower, 2-channel, digital isolators based on the Analog Devices, Inc., iCoupler? technology. Combining high speed, complementary metal oxide semiconductor (CMOS) and monolithic air core transformer technologies, these isolation components provide outstanding performance characteristics superior to the alternatives, such as optocoupler devices.

FEATURES

Ultralow power operation

3.3 V operation

5.6 μA per channel quiescent current, refresh enabled

0.3 μA per channel quiescent current, refresh disabled

148 μA/Mbps per channel typical dynamic current

2.5 V operation

3.1 μA per channel quiescent current, refresh enabled

0.1 μA per channel quiescent current, refresh disabled

116 μA/Mbps per channel typical dynamic current

Small, 20-lead SSOP package and small 8-lead SOIC package

Bidirectional communication

Up to 2 Mbps data rate nonreturn to zero (NRZ)

High temperature operation: 125°C

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

Safety and Regulatory Approvals

UL 1577 component recognition program

3750 V rms for 1 minute per UL 1577 (20-lead SSOP)

3000 V rms for 1 minute per UL 1577 (8-lead SOIC)

CSA Component Acceptance Notice 5A

VDE certificate of conformity

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

VIORM = 849 V peak (20-lead SSOP)

VIORM = 560 V peak (8-lead SOIC)

APPLICATIONS

General-purpose, low power, multichannel isolation

1 MHz low power serial peripheral interface (SPI)

4 mA to 20 mA loop process control