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Intersil rolls out Blue-Ray Disc laser driver

Posted: 19 Sep 2002 ?? ?Print Version ?Bookmark and Share

Keywords:intersil? el6900c? laser driver? blue ray disc? dvd laser driver?

Intersil Corp. has announced the availability of the EL6900C laser driver, designed specifically for the Blue-Ray Disc disc-recording format used in next-generation consumer HDTV and PC optical disc recording.

The Blu-Ray Disc standard is the next-generation recording technology beyond DVD that dramatically increases recording density by using a shorter-wavelength 405nm blue-violet laser compared to the conventional 650nm red laser. The shorter-wavelength laser enables a smaller spot size and track pitch to be recorded on the disc and increase the storage density from 4.7GB to 27GB on a single side disc.

The programmable laser driver has Blu-Ray Disc standard write-strategy waveforms integrated into its high-speed waveform generator, eliminating the need to drive high-speed timing signals and the critical accuracy write-current power levels over the flex cable.

Instead, these signals are all programmed digitally and converted internally to the analog output to drive the laser. In addition, multi-level programmability increases the fidelity of the write operation and enables this architecture to breakthrough the performance limits and design problems of existing parallel architecture laser diode drivers.

The EL6900C offers on-chip real-time power control via a two-channel S/H amplifier that can be programmed for four separate gains under register control. Each channel has an 8-bit DAC to eliminate the need for external potentiometers, normally required for external calibration at manufacturing.

Each channel's 210MHz clock speed enables up to 3X Blu-Ray Disc write performance. Closed-loop automatic power control is supported with the EL6900's additional Islope and IAPC inputs. Other features include programmable amplitude and frequency modulation and low-noise read amplifier.

Available in a 38-pin LPP casing, the EL6900C is priced at $5 in 10,000-unit quantities.





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