Voice line termination chip uses 50% less stand-by power

21st October 2014

Lantiq

Siobhan O'Gorman

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Datasheet

Manufactured for customer premise equipment (CPE) designs, the DUSLIC XS next-gen voice line termination chip has been released by Lantiq. According to the company, the chip enables CPE manufacturers to use fewer external components than competing devices and reduces the cost for manufacturers to provide wideband-capable voice telephony. Compared to competing ICs, Lantiq claims that the chip uses 50% less stand-by power, at 20mW.

The DUSLIC XS is suitable for the implementation of dual- or single-line analogue phone services on any fibre, cable, LTE or xDSL home gateway device. Automated line testing capabilities that far exceed the requirements of GR.909 are provided by the chip.

For the implementation of the foreign exchange subscriber interface, which is required to support analogue fixed line phone services, the DUSLIC XS is offered as a single-package, cost and footprint optimised CODEC/SLIC solution. Available in an 8x8mm package for dual or single-voice line, or single-line chip in 7x7mm package, the chip is 20% smaller than it’s predecessor.

Due to the integration and elimination of duplicated external components, the BOM cost of the DUSLIC XS is below $0.20 for dual-line termination. With wideband support (16kHz, 16-bit linear), the chip provides CO-grade transmission performance and operates within an industrial temperature range. The DUSLIC XS also offers automatic ring current regulation, DTMF generation and detection and caller ID generation. For PnP, NMOS, flyback, -48V buck/boost, low input voltage applications, reference designs for 2-layer board solutions, including schematics and list of material are available.

Integrated line testing features are also provided and include capacitance measurement, phone detection test, AC level metering, make-and-break dial tone test and universal tone detection test.

Johannes Eiblmeier, Vice President, and Head of the Voice and Telecom Products Business Line: “The latest generation of our DUSLIC family again sets the benchmark for CPE voice line termination. One example is the combined DC/DC mode, which allows use of a single power converter to support two voice lines while still achieving exceptional power consumption to readily meet the stringent requirements defined in the European Code of Conduct.”

The DUSLIC XS voice line termination chip is available now and will be presented by Lantiq in hall 11, booth C10 of the Broadband World Forum, which takes place from 21st to 23rd October 2014.