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ISL58797 Scheda tecnica(PDF) 1 Page - Intersil Corporation |
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ISL58797 Scheda tecnica(HTML) 1 Page - Intersil Corporation |
1 / 2 page 1 DATASHEET To request the full datasheet, please visit www.intersil.com/products/isl58797 Laser Diode Driver with Write Current DAC and PDIC Control Outputs ISL58797 The ISL58797 is a highly integrated, single supply laser diode driver designed to support multi-standard writable optical drives in CD, DVD, and Blu-Ray formats at various speeds. It is a ‘hybrid’ part having an interface compatible with a conventional LDD, but an internal architecture similar to a write strategy LDD. This combination adds versatility to the conventional interface. The ISL58797 also features PDIC (OEIC) control pins; which help reduce the signal lines on the Flex cables. The rise time, fall time and overshoot of all outputs are adjustable to compensate for high and low resistance lasers. The ISL58797 architecture includes dual write current banks, which can be selected using the bank select line, BSEL. This eliminates the need to synchronize the serial port to the media. The oscillator is internally activated through program assignment to attach to any WEN state. The WEN lines have internal 100Ω termination resistors. There is a skew detector on the WEN receiver outputs. Applications • Combination DVD, CD, and Blue Writable Drives •BD Camcorders •BD Video Recorders Features • Compatible with all Conventional Controllers Having a Serial Port, with Some Programming • Programmable Snubber on all Outputs • PDIC (OEIC) Control Pins • Compatible with Controllers Having Gray Coded WEN Lines for Glitchless High-Speed Operation • WEN Line Skew Detection • 1000mA Maximum Total Write Output Current • 10-bit x 10-bit Multiplying DAC Output Provides 10-bit Full-Scale Adjustment and 10-bit Resolution at any Full-Scale Output • Three Laser Outputs Allow Read/Write DVD, CD, and Blue Combinations • Single +5V Supply • Analog Inputs Supports Slope and Read APC • HFM Oscillator Programmable to 100mAP-P and Range from 100MHz to >1GHz • Programmable HFM On, Off and Cooling Levels • Programmable Spread Spectrum for Low EMI • Built-in ADC to Sample Laser Voltage Allows Power Reduction by Optimizing Headroom • Built-in Thermal Sensor Aids in Thermal Design • Serial Input Works up to 50MHz • Pb-Free (RoHS Compliant) FIGURE 1. SIMPLIFIED BLOCK DIAGRAM SPI Interface Blue WDAC WDAC 2 WDAC1 IOUT2 IOUT1 WEN0 (LVDS) ENA BSEL SEN VSO GND WEB Data Interface & Registers Scale DAC SCLK SDIO WEN1 (LVDS) WEN2 (LVDS) Read DAC Red Laser IR Laser IAPC ISLOPE READ IBLUE V_Blue LD April 26, 2012 FN7984.0 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2012. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. |
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