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ATR1842 Datasheet Front Monitor Diode

Manufacturer: Atmel (now Microchip Technology)

General Description

The ATR1842 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 serial programming interface (SPI) it is possible to fit the laser power for Blu-ray/HD-DVD, DVD and CD.

2 bits are used to set the mode/gain level and 6 additional bits are used for gain trimming, within ±6 dB.

Key Features

  • 405 nm, 650 nm and 780 nm Wavelengths Supported Blu-ray/HD-DVD x5, CD-R/RW x52, DVD-R/RW x16 Adjustment of Mode and Gain by Setting Internal Register via Serial Interface Paraphase Outputs Internal Reference Voltage Generation Fast Settling Time Low Offset Voltage Power-down Mode Pb-free Optical 12-pin Package.