Features • • • • • • • • 650 nm and 780 nm Wavelengths Supported 150 MHz Data Channel Bandwidth Fast Settling Time 4 Configurable Gain Steps 12 Photo Diodes Low Offset Voltage Power-down Mode Pb-free Optical 16-pin Package Applications • • • • • DVD +RW with CD-RW Capability DVD -RW with CD-RW Capability DVD-RAM with CD-RW Capability DVD 18x Up to 20x Application Recordable Optical Data Storage Devices 1. Description The ATR1874 is a Photo Detector Integrated Circuit (PDIC) for operation in high-speed DVD applications like DVD-RAM and DVD+/-RW at a wavelength of 650 nm and CD-RW at a wavelength of 780 nm. It includes 10 channels with 4 different gain steps. The four channels A, B, C, and D are high-speed channels whereas the channels E1G1, E2G2, F1H1, F2H2 are high-gain channels at average speed for tracking control, sector information etc. The remaining two channels RF+ and RF– are RF paraphase outputs. Channels A to D are summed together at the RF outputs. 10-channel High-speed Photo Detector IC for DVD/CD ATR1874 Summary Preliminary Setting of the gain and entering/exiting sleep mode is controlled using the two tri-state inputs SW1 and SW2. All channels are set to tri-state during sleep mode. Due to its small package size the ATR1874 is especially suited for application with restricted height requirements like SLIM and UltraSLIM drives. NOTE: This is a summary document. The complete document is available under NDA. For more information, please contact your local Atmel sales office. 4998AS–DVD–05/07 Figure 1-1. Block Diagram VCC VZERO 2.05V 0.5*∑ VREF ∑ + SW1 SW2 Gain Switch 0.5*∑ ∑ - F2H2 F1H1 + + H1 H2 G1 G2 B E2G2 E1G1 A D F1 F2 E1 GND 2 RF- + B + C + D + A C + + RF+ E2 GND ATR1874 [Preliminary] 4998AS–DVD–05/07 ATR1874 [Preliminary] 2. Pin Configuration Figure 2-1. Table 2-1. Pinning QFN16L VREF 1 16 VCC GND 2 15 GND F2H2 3 14 B F1H1 4 13 C E1G1 5 12 D E2G2 6 11 A SW1 7 10 RF+ SW2 8 9 RF- H1 Pin Description Pin Symbol Type 1 VREF Analog Reference voltage Function 2 GND Supply Ground 3 F2H2 Analog Output channel F2H2 4 F1H1 Analog Output channel F1H1 5 E1G1 Analog Output channel E1G1 6 E2G2 Analog Output channel E2G2 7 SW1 Tri-state Gain switch 8 SW2 Tri-state Gain switch 9 RF– Analog Output RF– 10 RF+ Analog Output RF+ 11 A Analog Output channel A 12 D Analog Output channel D 13 C Analog Output channel C 14 B Analog Output channel B 15 GND Supply Ground 16 VCC Supply Supply voltage 3 4998AS–DVD–05/07 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 Symbol Value Unit Supply voltage VCC –0.5 to +6.0 V Input voltage at any input Vin –0.5 to VCC – 0.5 V Storage temperature Tstg –40 to +100 °C Soldering temperature QFN_Open package Tsol 260 °C Symbol Value Unit Supply voltage VCC 4.5 to 5.5 V Reference voltage VREF 1.5 to 2.3 V Operating temperature range Tamb 0 to +80 °C 4. Recommended Operating Conditions Parameters 4 ATR1874 [Preliminary] 4998AS–DVD–05/07 ATR1874 [Preliminary] 5. Photo Diode Arrangement Figure 5-1. Photo Diode Arrangement f b H1 H2 c f G1 G2 Photo diode is symmetrically centered to the center of the chip and package Symmetrical axis is parallel to the package e d a B C d f D A f a e F1 F2 c f E2 E1 b f 5 4998AS–DVD–05/07 6. Ordering Information Extended Type Number Package Remarks ATR1874-PZQW QFN_OPEN_4x3.5_16L Taped and reeled, Pb-free 7. Package Information Package: QFN_OPEN_4 x 3.5_16L_W1 x 1.06 Dimensions in mm 1 (0.26) 3.5±0.1 Drawing-No.: 6.543-5135.01-4 0±0.0508 (Pd Center to Pkg Center) 0.9±0.1 (0.4) 0.06 1.06 ˚ 8 0.23±0.05 16 16 15 14 13 12 11 10 1 2 3 4 5 6 7 9 8 0.2 0.65 0.4±0.1 0.25±0.08 0.25 15 4±0.1 1 0.2 0.2 Side View Top View 0.65 0.5 nom. A1 Corner A1 Corner Bottom View 0±0.0508 (Pd Center to Pkg Center) technical drawings according to DIN specifications Issue: 2; 18.01.07 6 ATR1874 [Preliminary] 4998AS–DVD–05/07 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 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 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel: (49) 71-31-67-0 Fax: (49) 71-31-67-2340 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel: (33) 2-40-18-18-18 Fax: (33) 2-40-18-19-60 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel: 1(719) 576-3300 Fax: 1(719) 540-1759 Biometrics Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France Tel: (33) 4-76-58-47-50 Fax: (33) 4-76-58-47-60 ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France Tel: (33) 4-42-53-60-00 Fax: (33) 4-42-53-60-01 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel: 1(719) 576-3300 Fax: 1(719) 540-1759 Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland Tel: (44) 1355-803-000 Fax: (44) 1355-242-743 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. © 2007 Atmel Corporation. All rights reserved. Atmel®, 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. 4998AS–DVD–05/07