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| 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 Front Monitor Diode for Blu-ray/HD-DVD/ DVD/CD with Serial Interface ATR1842 Summary Preliminary 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 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. NOTE: This is a summary document. The complete document is currently not available. For more information, please contact your local Atmel sales office. 9109AS-DVD-08/07 Figure 1-1. Block Diagram SENB SDATA SCLK Gain Select (H/M/L) Gain Adjust (6 dB) RF+ RFInternal Vref VCC GND ADS 2 ATR1842 [Preliminary] 9109AS-DVD-08/07 ATR1842 [Preliminary] 2. Pin Configuration Figure 2-1. Pinning QFN12L NC 10 NC 11 GND RFRF+ VCC 1 2 3 4 9 NC 12 NC 8 7 6 5 GND SENB SCLK SDATA Table 2-1. Pin 1 2 3 4 5 6 7 8 9 10 11 12 Pin Description Symbol GND RFRF+ VCC SDATA SCLK SENB GND NC NC NC NC Type Supply Analog Analog Supply Digital Digital 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 3 9109AS-DVD-08/07 3. Absolute Maximum Ratings Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameters Supply voltage Input voltage at any input Storage temperature Soldering temperature QFN_Open package Symbol VCC Vin Tstg Tsol Value -0.5 to +6.0 -0.5 to VCC - 0.5 -40 to +100 260 Unit V V C C 4. Recommended Operating Conditions Parameters Supply voltage Operating temperature range Symbol VCC Tamb Value 4.5 to 5.5 -10 to +80 Unit V C 5. Electrical Characteristics: General VCC = 5V, Tamb = 25C, = 405 nm/780 nm/650 nm Output load: Rload = 10 k, Cload = 20 pF No. 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Parameters Supply current Supply current (standby mode) VREF_INT TCVREF_INT Maximum output voltage Minimum output voltage Power supply rejection ratio Power supply rejection ratio Output Offset Voltage Output offset Offset drift VREF - VRF+, VREF - VRF- VOFF1 dVOFF/dT -20 -25 0 +20 +25 mV V/C C C Low-frequency (10 kHz), inclusive application/ flexboard High-frequency (100 kHz), inclusive application/ flexboard Vout Vout PSRR -45 VCC - 0.9 0.3 Test Conditions Pin Symbol ICC ICC 1.65 15 Min. Typ. 28 Max. 30 0.5 Unit mA mA V V/C V V dB Type* A A A C C C C DC Specifications, Power Supply 1.8 2 2.1 2.2 PSRR -45 dB C *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter 4 ATR1842 [Preliminary] 9109AS-DVD-08/07 ATR1842 [Preliminary] 6. Serial Programming Interface 6.1 Data MSB2 m1 m2 g1 g2 g3 g4 g5 LSB2 g6 6.2 Mode Setting The first two bits select the mode/gain level. Table 6-1. m1 1 1 0 0 Mode Selection Register m2 1 0 1 0 Mode Select High Gain Middle Gain Low Gain Sleep 6.3 Gain Setting The last six bits are used to finely adjust the gain by 6 dB. Table 6-2. g1 1 1 0 Gain Selection Register g2 1 0 0 g3 1 ... 0 ... 0 0 0 0 0 0 0 g4 1 g5 1 g6 1 Gain +6 dB ... 0 dB ... -6 dB 5 9109AS-DVD-08/07 7. Applications Recommendation To achieve the best performance VCC needs to be blocked using a high quality capacitor (C = 100 nF) as close to IC/pin as possible. 8. Photo Diode Arrangement Figure 8-1. Phote Diode Arrangement D D Dimensions 500.0 m Photo diode is symmetrically centered to the center of the chip and package 6 ATR1842 [Preliminary] 9109AS-DVD-08/07 ATR1842 [Preliminary] 9. Ordering Information Extended Type Number ATR1842-P1QN Package QFN_OPEN_3x3_8L Remarks Taped and reeled, Pb-free 10. Package Information 7 9109AS-DVD-08/07 Headquarters Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 International Atmel Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 Atmel Europe Le Krebs 8, Rue Jean-Pierre Timbaud BP 309 78054 Saint-Quentin-en-Yvelines Cedex France Tel: (33) 1-30-60-70-00 Fax: (33) 1-30-60-71-11 Atmel Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581 Product Contact Web Site www.atmel.com Technical Support dvd_ldd@atmel.com Sales Contact www.atmel.com/contacts Literature Requests www.atmel.com/literature Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL'S TERMS AND CONDITIONS OF SALE LOCATED ON ATMEL'S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel's products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. (c) 2007 Atmel Corporation. All rights reserved. Atmel (R), logo and combinations thereof, and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. 9109AS-DVD-08/07 |
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