ATR1842-P1QW

ATR1842-P1QW Datasheet


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.

Part Datasheet
ATR1842-P1QW ATR1842-P1QW ATR1842-P1QW (pdf)
PDF Datasheet Preview
• 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
• 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 Serial Interface

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. Also setting into sleep mode can be done via the serial programmin interface SPI .

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 ATR1842 is especially suited for applications with low height requirements like SLIM and Ultra-SLIM drives.

ATR1842 Summary Preliminary

NOTE This is a summary document. The complete document is currently not available. For more information, please contact your local Atmel sales office.

Figure Block Diagram

SENB SDATA

SCLK

Gain Select H/M/L Gain Adjust ±6 dB

Internal Vref

RFADS
2 ATR1842 [Preliminary]

ATR1842 [Preliminary]

Pin Configuration

Figure Pinning QFN12L

NC 10

GND 1 RF- 2 RF+ 3

VCC 4

NC 11
8 GND 7 SENB 6 SCLK 5 SDATA
12 NC

Table Pin 1 2 3 4 5 6 7 8 9 10 11 12

Pin Description

Type

Supply

Analog

Analog

Supply

SDATA

Digital

SCLK

Digital

SENB

Digital

Supply

Function Ground Negative output Positive output Power supply Serial interface, data input Serial interface, clock Serial interface, data enable Ground Not connected Not connected Not connected Not connected
Ordering Information

Extended Type Number ATR1842-P1QN

Package QFN_OPEN_3x3_8L

Package Information

Remarks Taped and reeled, Pb-free

Headquarters

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Datasheet ID: ATR1842-P1QW 519286