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LMH6525 - Four-hannel Laser Diode Driver

Datasheet Summary

Description

The LMH™6525/6526 is a laser diode driver for use in combination DVD/CD recordable and rewritable systems.

The part contains two high-current outputs for reading and writing the DVD (650 nm) and CD (780 nm) lasers.

Features

  • a 150 mA read channel plus one 300 mA and two 150 mA write channels, which can be summed to allow a total output current of 600 mA or greater. The channel currents are set through four independent current inputs. An on-board High-Frequency Modulator (HFM) oscillator helps reduce low-frequency noise of the laser and is enabled by applying LVDS levels on the ENOSC pins for the LMH6525, while the LMH6526 is enabled by applying an asymmetrical signal on the ENOSC pin. The fully differential oscillat.

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Datasheet Details

Part number LMH6525
Manufacturer National Semiconductor
File Size 943.78 KB
Description Four-hannel Laser Diode Driver
Datasheet download datasheet LMH6525 Datasheet
Additional preview pages of the LMH6525 datasheet.

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Full PDF Text Transcription

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www.DataSheet4U.com June 2005 LMH6525/LMH6526 Four–Channel Laser Diode Driver with Dual Output LMH6525/LMH6526 Four–Channel Laser Diode Driver with Dual Output General Description The LMH™6525/6526 is a laser diode driver for use in combination DVD/CD recordable and rewritable systems. The part contains two high-current outputs for reading and writing the DVD (650 nm) and CD (780 nm) lasers. Functionality includes read, write and erase through four separate switched current channels. The channel currents are summed together at the selected output to generate multilevel waveforms for reading, writing and erasing of optical discs. The LVDS interface delivers DVD write speeds of 16x and higher while minimizing noise and crosstalk.
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