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Analog Devices - Transceivers combine three-channel isolator and IEC EMC transient protection in single package (ADM2795E)

Technology Cover
Post Date: 2019-02-09, Analog Devices Inc.

Analog Devices ADM2795E Transceivers are 5kVrms signal-isolated RS-485 transceivers. The transceivers offer up to ±42V of AC/DC peak bus overvoltage fault protection on the RS-485 bus pins. Created using iCoupler technology, the transceivers combine a three-channel isolator, RS-485 transceiver, and IEC EMC transient protection into a single package.

These transceivers offer IEC 61000-4-5 Level 4 surge protection, which allows up to ±4kV protection on the RS-485 bus pins. The device has IEC 61000-4-4 Level 4 EFT protection up to ±2kV and IEC 61000-4-2 Level 4 ESD protection on the bus pins. This protection enables the transceivers to withstand up to ±15kV on the transceiver interface pins without latching up.

The device’s extended common-mode input range of ±25V improves data communication reliability in noisy environments. The transceivers operate over broad power supply ranges, using a 1.7V to 5.5V VDD1 power supply range. This enables the transceivers to interface to low-voltage logic supplies. When running over a 3V to 5.5V VDD2 power supply, the transceivers are fully TIA/EIA RS-485/RS-422 compliant.

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