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 Application Recordable Optical Data Storage Devices 1. Description The ATR0874 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, 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 ATR0874 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 ATR0874 is especially suited for application with low height requirements like SLIM and UltraSLIM drives. 4972AS–DVD–04/07 Figure 1-1. Block Diagram VCC 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 + D + C + A C + + RF+ E2 GND ATR0874 [Preliminary] 4972AS–DVD–04/07 ATR0874 [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 4972AS–DVD–04/07 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 Symbol Value Unit 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 COB package Tsol 235 °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 ATR0874 [Preliminary] 4972AS–DVD–04/07 ATR0874 [Preliminary] 5. Photo Diode Arrangement Figure 5-1. Phote 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 4972AS–DVD–04/07 6. Ordering Information Extended Type Number Package Remarks ATR0874-PZQW QFN_OPEN_4x3.5_16L Taped and reeled, Pb-free 7. Package Information technical drawings according to DIN specifications A1 Corner Side View 1 16 8 9 Bottom View 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 0.4±0.1 0.25 1 0.9±0.1 3.5±0.15 0.5 nom. Top View 0.25±0.08 A1 Corner 0.23±0.05 0±0.0508 (Pd Center to Pkg Center) 4±0.1 0±0.0508 (Pd Center to Pkg Center) Package: QFN_OPEN_4x3.5_16L Dimensions in mm Drawing-No.: 6.543-5116.01-4 Issue: 1; 02.03.05 6 ATR0874 [Preliminary] 4972AS–DVD–04/07 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. 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