G.fast transformers can be used with Broadcom's chipsets

26th June 2015

Siobhan O'Gorman

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Datasheet

Pulse Electronics has introduced its new family of G.fast functional isolation transformers. The BX4500LNL and BX4500LNLT transformers can be matched with a Microsemi line driver and used with Broadcom's BCM652xx DSP and BCM659xx AFE chipsets for G.fast transmission, Le87282.

Operating bandwidth is 2MHz to 100MHz with target speeds up to 1Gb/s to consumer residences. These transformers enable Broadcom's chipsets to deliver high-speed broadband access for broadcast quality multi-stream IPTV, voice, data and home networking.

The G.fast transformers are built on a very small platform of 8x8x10mm with a low leakage inductance of less than 0.4µH. G.fast is the newly approved ultra-broadband DSL standard from the ITU for local loops shorter than 500 metres and is expected to deliver up to 1Gb/s to consumer residences, ITU-T G.9701.

Pulse Electronics' BX4500LNL transformer is packaged in trays while the BX4500LNLT is packaged in tape and reel. They are EN60950 functional isolation compliant 250Vrms and RoHS-6 compliant SMD products.

"These transformers have improved longitudinal balance and provide excellent total harmonic distortion performance on a very compact platform," said Ronan Kelly, Product Marketing Manager, Pulse Electronics. "The G.fast series supports Broadcom's chipset technology to drive data rates up to 150Mbps/downstream and 100Mbps/upstream on a single line."