1 V RMS Six-Channel Digital Isolators (6/0 Channel Directionality)

The ADuM7640 / ADuM7641 / ADuM7642 / ADuM7643 are 6-channel digital isolators based on the Analog Devices, Inc., iCoupler® technology. These 1 kV digital isolation devices are packaged in a small 20-lead QSOP. They offer space savings and a lower price than 2.5 kV or 5 kV isolation solutions when only functional isolation is needed.

This family, like many Analog Devices isolators, offers very low power consumption, using one-tenth to one-sixth the power of other digital isolators, with the supply voltage on either side ranging from 3.0 V to 5.5 V. Despite their low power consumption, the ADuM7640 / ADuM7641 / ADuM7642 / ADuM7643 provide low pulse width distortion (< 6 ns for C grade) and a channel-by-channel glitch filter to protect the device against extraneous noise disturbances. Four channel direction combinations are available with a maximum data rate of 1 Mbps or 25 Mbps. All products have a default output high logic state in the absence of input power.

Applications

* General-purpose, multichannel isolation

* SPI interface/data converter isolation

* RS-232/RS-422/RS-485 transceivers

* Industrial field bus isolation

* Small 20-lead QSOP * 1000 V rms isolation rating * Safety and regulatory approvals:

* UL 1577

* VISO = 1000 V rms for 1 minute

* Low power operation

* 3.3 V operation

* 1.6 mA per channel maximum at 0 Mbps to 1 Mbps * 7.8 mA per channel maximum at 25 Mbps

* 5 V operation

* 2.2 mA per channel maximum at 0 Mbps to 1 Mbps * 11.2 mA per channel maximum at 25 Mbps