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Blu-ray/HD-DVD
DVD+RW with CD-RW Capability
DVD-RW with CD-RW Capability
DVD-RAM with CD-RW Capability
Recordable Optical Data Storage Devices
Front Monitor
Diode for
Blu-ray/HD-DVD/
DVD/CD with
TWI
ATR1841
Summary
Preliminary
1. Description
The ATR1841 is a front monitor diode (FMD) which controls the laser power of the
optical pickup for Blu-ray/HD-DVD, DVD and CD drives in one IC.
With the Two-wire Interface (TWI) it is possible to fit the laser power for
Blu-ray/HD-DVD, DVD and CD. Two bits are used to set the mode/gain level and 6
additional bits are used for gain trimming, within 鹵6 dB. Entering sleep mode is also
controlled via the TWI.
The integrated PIN diode and the high speed amplifier with low output impedance
ensures stable driver performance.
All output channels are set to tri-state during sleep mode.
Due to its small package size the ATR1841 is especially suited for applications with
low height requirements like SLIM and Ultra-SLIM drives.
NOTE:
This is a summary document.
The complete document is currently not
available. For more information, please
contact your local Atmel sales office.
9103AS鈥揇VD鈥?8/07