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Product category: Communications ICs (Wired)
News Release from: Intersil | Subject: ISL1539
Edited by the Electronicstalk Editorial Team on 21 June 2007

Driver boosts datarates on longer-range
DSL

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First monolithic dual-port DSL line driver for 100Mbit/s VDSL2 central office applications.

Intersil has introduced the ISL1539, the latest addition to its family of line drivers featuring low power, very small footprint and extremely good linearity The ISL1539 is the first monolithic dual-port DSL line driver for 100Mbit/s VDSL2 central office (CO) applications

The ISL1539 uses proprietary circuitry to achieve low distortion, high capacitance drive and less than 910mW/port total power consumption while delivering 20.5dBm output power in five-band VDSL2 applications.

The driver uses Intersil's own new high-speed bipolar process technology to extend the performance of ADSL2, ADSL2+ and VDSL2 bandwidth high voltage line drivers.

The ISL1539 is a performance extension of Intersil's ADSL2+ line drivers, thus this new driver supports full ADSL2+ fall back capability to drive long loop lengths at lower datarate as well as shorter loops at the full 100Mbit/s rates.

Now DSL equipment designers can provide more flexible solutions, broader application range and higher value to telecomms customers all from one hardware design platform.

The design of the ISL1539, a current mode feedback DSL driver, has been optimised for high slew rate and low distortion in the 25kHz to 17MHz frequency bands.

The ability of the driver to operate from power supplies up to 30V allows for use of transformer turns ratios that provide the highest receiver SNR for the central office VDSL2 chipsets.

This eases the receiver specification requirements on the VDSL2 analogue front ends and can also increase longer reach datarates.

The ISL1539's extraordinary performance and small size enable designers to achieve very high port count VDSL2 line cards aimed at IP TV and video-on-demand service applications.

The dual port drivers are packaged in tiny 4 x 5mm QFN packages, allowing the smallest footprint for VDSL2 applications.

Low bias current, ease of use for high density PCB layout and a reduced number of external components provide unmatched performance and footprint features.

Intersil is advancing its leadership in line drivers for the DSL industry.

The ISL1539 provides its chipset partners and telecomms customers with the enabling performance to achieve the highest datarates in the industry.

Intersil is committed to developing new semiconductor processes in support of leading-edge products for low cost ADSL2+ and performance driven VDSL2 applications.

Intersil continues to integrate and simplify the line driver section of the xDSL systems and improve linearity versus power to extend this technology towards higher and higher datarates.

The ISL1539 is available now in both 24-lead QFN and 24-lead HTSSOP packages.

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