Low EMI converter transformers approved for use with Analog Devices’ high speed transceivers

Murata Power Solutions has introduced a new series of converter transformers specifically designed for use with Analog Devices’ ADM2482/7 transceiver chipsets used to provide isolated RS-485 and RS-422 interfaces. The 782482 series has carefully controlled turns ratios to ensure consistent performance whilst a toroidal construction helps minimise electromagnetic interference (EMI).

Housed in an industry-standard, dual-in-line (DIL) package using UL94 V-0 materials, the low-profile 782482 series has overall dimensions of 9.77mm (0.385in.) x 9.14mm (0.360in.) x 6.35mm (0.25in.) high. Nominal input voltages are 3.3V for the 782482/33VC and 5.0V for the 782482/53VC; both models have a nominal output voltage of 3.3V and provide 4.0kVDC isolation.

An industrial temperature range of -40°C to +85°C makes the 782482 series suitable for use in a wide range of applications. Both models are RoHS compliant and backward compatible with Sn/Pb soldering systems. Surface mount versions of the new converter transformers are under development.

Analog Devices’ ADM2482/7 are isolated data transceivers with ±15 kV ESD protection and are suitable for high speed, half-duplex or full-duplex communication on multipoint transmission lines. The devices employ the Analog Devices iCoupler® technology to combine a three-channel isolator, a three-state differential line driver, and a differential input receiver into a single package.

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