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SY88149HL Datasheet(PDF) 5 Page - Micrel Semiconductor |
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SY88149HL Datasheet(HTML) 5 Page - Micrel Semiconductor |
5 / 11 page Micrel, Inc. SY88149HL June 2010 5 M9999-061110-I hbwhelp@micrel.com or (408) 955-1690 AC Electrical Characteristics VCC = 3.0V to 3.6V; RLOAD = 50 Ω to V CC–2V; TA = –40°C to +85°C. Symbol Parameter Condition Min Typ Max Units tr, tf Output Rise/Fall Time (20% to 80%) Note 4 260 ps tJAM_LH JAM Low to High Propagation Time Note 12 5 ns tJAM_HL JAM High to Low Propagation Time Note 13 2 ns tAUTORESET SD de-assert or LOS assert with Auto Reset enabled. 75 100 150 ns tRESET RESET time constant Note 5 5 ns tON SD Assert Time/LOS De-assert time Note 9 5 ns tJITTER Deterministic Random Note 6 Note 7 15 5 psPP psRMS VID Differential Input Voltage Swing Figure 1 4 1800 mVPP VOD Differential Output Voltage Swing VID > 18mVPP 1500 mVPP SDAL /LOSDL Low SD Assert/LOS De-assert Level RLOS/SDLVL = 5k Ω, Note 8, 10 4.2 mVPP SDDL// LOSAL Low SD De-assert/LOS Assert Level RLOS/SDLVL = 5k Ω, Note 10 3 mVPP HYSL Low SD/LOS Hysteresis RLOS/SDLVL = 5k Ω, Note 11 2.9 dB SDAM/ LOSDM Medium SD Assert/LOS De-assert Level RLOS/SDLVL = 2.5k Ω, Note 10 5.2 12 mVPP SDDM/ LOSAM Medium SD De-assert/LOS Assert Level RLOS/SDLVL = 2.5k Ω, Note 10 2.5 3.7 mVPP HYSM Medium SD/LOS Hysteresis RLOS/SDLVL = 2.5k Ω, Note 11 3 dB SDAH/ LOSDH High SD Assert/LOS De-assert Level RLOS/SDLVL = 50 Ω, Note 10 15 24 mVPP SDDH/ LOSAH High SD De-assert/ LOS Assert Level RLOS/SDLVL = 50 Ω, Note 10 6 9.5 mVPP HYSH High SD/LOS Hysteresis RLOS/SDLVL = 50 Ω, Note 11 4 dB B-3dB 3dB Bandwidth 1 GHz AV(Diff) Differential Voltage Gain 48 dB S21 Single-ended Small-Signal Gain 42 dB Notes: 4. Amplifier in limiting mode. Input is a 200MHz square wave. 5. The time between applying RESET and outputs being disabled. 6. Deterministic jitter measured using 1.25Gbps K28.5 pattern, VID = 10mVPP. 7. Random jitter measured using 1.25Gbps K28.7 pattern, VID = 10mVPP. 8. SD is the opposite polarity of LOS. Therefore, an SD Assert parameter is equivalent to a LOS De-assert parameter and vice versa. 9. See “Typical Operating Characteristics” for graphs showing input signal vs. SD Assert/LOS De-assert time at various RLOS/SDLVL settings. 10. See “Typical Operating Characteristics” for a graph showing how to choose a particular RLOS/SDLVL for a particular assert and its associated de-assert amplitude. 11. This specification defines electrical hysteresis as 20log (SD Assert/SD De-assert). The ratio between optical hysteresis and electrical hysteresis is found to vary between 1.5 and 2 depending upon the level of received optical power and ROSA characteristics. Based upon that ratio, the optical hysteresis corresponding to the electrical hysteresis range 2dB-5dB, shown in the AC characteristics table, will be: 1dB-4dB optical Hysteresis. 12. JAM Low to High transition propagation delay refers to the time it takes from a LOW to HIGH transition at JAM input to turning on (if SD is selected) or turning off (if LOS is selected) the LVPECL outputs. 13. JAM High to Low transition propagation delay refers to the time it takes from a HIGH to LOW transition at JAM input to turning off (if SD is selected) or turning on (if LOS is selected) the LVPECL outputs. |
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