MIC3000_07 Datasheet, PDF (4/68 Pages) Micrel Semiconductor – FOM Management IC

MIC3000
Micrel
Table 21. Control Range of SY88912 Modulation Control Circuit ...................................................................................................... 63
SY88932 3.3V 3.2Gbps SONET/SDH Laser Driver ............................................................................................................................. 63
Figure 30. Controlling the SY88932 Modulation Current .................................................................................................................... 63
SY89307 5.0V/ 3.3V 2.5Gbps VCSEL Driver ....................................................................................................................................... 64
Figure 31. Controlling the SY89307 Modulation Current .................................................................................................................... 64
Laser Drivers Programmed via a Sink Current .................................................................................................................................. 64
Figure 32. Controlling the Modulation Current via a Sink Current ...................................................................................................... 64
Drivers With Monitor Outputs .............................................................................................................................................................. 64
Shutdown Output .................................................................................................................................................................................. 64
Figure 33. Redundant Switch Circuits ................................................................................................................................................. 65
Temperature Sensing ............................................................................................................................................................................ 65
Table 23. Contributors to Self-Heating ................................................................................................................................................ 65
Remote Sensing .................................................................................................................................................................................... 65
Table 22. Transistors Suitable for Use as Remote Diodes ................................................................................................................ 65
Minimizing Errors .................................................................................................................................................................................. 65
Self-Heating ............................................................................................................................................................................................ 65
Series Resistance with External Temperature Sensor ..................................................................................................................... 66
XPN Filter Capacitor Selection ............................................................................................................................................................ 66
XPN Layout Considerations ................................................................................................................................................................. 66
Figure 34. Guard Traces and Kelvin Return for Remote Thermal Diode ........................................................................................... 66
Layout Considerations ......................................................................................................................................................................... 66
Small Form-Factor Pluggable (SFP) Transceivers ............................................................................................................................ 66
Figure 35. Typical SFP Control and Status I/O Signal Routing (not to scale) ................................................................................... 66
Power Supplies ...................................................................................................................................................................................... 67
Figure 36. Power Supply Routing and Bypassing .............................................................................................................................. 67
Using The MIC3000 In a 5V System .................................................................................................................................................... 67
Package Information ............................................................................................................................................................................. 68
24-Pin MLF^® (ML) ................................................................................................................................................................................ 68
M9999-101204
4
October 2004