SY88905

Micrel, Inc. LASER DIODE CONTROLLER WITH APC SY88905 SY88905 FEATURES DESCRIPTION s DC bias current adjustable to 25mA s Buffered Loss-of-Signal output when used with SY88903 s Monitor Diode power control circuit s Designed for use with SY88902 and SY88903 s Single power supply s Available in 10-pin (3mm) MSOP APPLICATIONS The SY88905 is an integrated Laser Diode controller for the SY88902 Laser Driver and SY88903 Laser Receiver that provides power control functions for a complete module solution. The SY88905 is designed to provide the laser diode with an independent DC threshold current (IBIAS) source to assure optimum laser diode performance. The SY88905 also provides buffered Loss-of-Signal (LOS) output in PECL level. The device is designed for fast and accurate calibration of the laser diode. Once the optimal operating point is determined and set for a specific laser diode, the threshold current (IBIAS) is designed to automatically compensate for laser diode aging and module temperature. s Controller for High Speed Optical Data Transmission s 1.25Gbps Gigabit Ethernet s 531 Mbps and 1062Mbps Fibre Channel s 622Mbps SONET s Gigabit Interface Converter BLOCK DIAGRAM LOSIN VCC GND LOSOUT IBIAS VREF2 40X MD + VREF 2 VREF IBIAS SET IBIAS FB IPIN SET M9999-081005 [email protected] or (408) 955-1690 1 Rev.: C Amendment: /0 Issue Date: August 2005 Micrel, Inc. SY88905 PACKAGE/ORDERING INFORMATION LOSIN 1 LOSOUT 2 GND 3 IBIAS 4 VCC 5 MSOP K10-1 10 VREF 9...