Rainbow-electronics ATR1842 Manual de usuario descargar pdf

NOTE: This is a summary document.

The complete document is currently not

available. For more information, please

contact your local Atmel sales office.

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

Applications

• 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

1. 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 addi-

tional 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.

Front Monitor

Diode for

Blu-ray/HD-DVD/

DVD/CD with

Serial Interface

ATR1842

Summary

Preliminary

9109AS–DVD–08/07

1 2 3 4 5 6 7 8

Indice de contenidos

Pagina 1 - 1. Description

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

Pagina 2 - ATR1842 [Preliminary]

29109AS–DVD–08/07ATR1842 [Preliminary] Figure 1-1. Block Diagram Gain Select (H/M/L) Gain Adjust (±6 dB)SENBSDATAInternal VrefRF+RF-GNDVCCADSSCLK

Pagina 3

39109AS–DVD–08/07ATR1842 [Preliminary]2. Pin ConfigurationFigure 2-1. Pinning QFN12L 12348765GNDRF-RF+VCCGNDSENBSCLKSDATANC NC912NC NC10 11Table 2-1.

Pagina 4

49109AS–DVD–08/07ATR1842 [Preliminary] 3. Absolute Maximum RatingsStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent da

Pagina 5

59109AS–DVD–08/07ATR1842 [Preliminary]6. Serial Programming Interface6.1 Data6.2 Mode SettingThe first two bits select the mode/gain level.6.3 Gain Se

Pagina 6

69109AS–DVD–08/07ATR1842 [Preliminary] 7. Applications RecommendationTo achieve the best performance VCC needs to be blocked using a high quality capa

Pagina 7

79109AS–DVD–08/07ATR1842 [Preliminary]10. Package Information9. Ordering InformationExtended Type Number Package RemarksATR1842-P1QN QFN_OPEN_3x3_8L T

Pagina 8 - Product Contact

9109AS–DVD–08/07Headquarters InternationalAtmel Corporation2325 Orchard ParkwaySan Jose, CA 95131USATel: 1(408) 441-0311Fax: 1(408) 487-2600Atmel Asia

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