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SY88903ALKGTR Datasheet(PDF) 5 Page - Micrel Semiconductor |
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SY88903ALKGTR Datasheet(HTML) 5 Page - Micrel Semiconductor |
5 / 9 page Micrel, Inc. SY88903AL February 2007 5 M9999-021707-D hbwhelp@micrel.com or (408) 955-1690 AC Electrical Characteristics VCC = 3.0 to 3.6V; RL = 50Ω to VCC-2V; TA = –40°C to +85°C, typical values at VCC = 3.3V, TA = 25°C. Symbol Parameter Condition Min Typ Max Units tr, tf Output Rise/Fall Time (20% to 80%) Note 3 260 ps tJITTER Deterministic Random Note 4 Note 5 15 5 psPP psRMS VID Differential Input Voltage Swing See Figure 1 5 1800 mVPP VOD Differential Output Voltage Swing VID > 18mVPP, See Figure 1 1500 mVPP tOFF LOS Release Time Note 8 40 500 ns tON LOS Assert Time Note 8 125 500 ns LOSAL Low LOS Assert Level RLOSLVL = 15kΩ, Note 6 2.3 mVPP LOSDL Low LOS De-assert Level RLOSLVL = 15kΩ, Note 6 3.4 mVPP HSYL Low LOS Hysteresis RLOSLVL = 15kΩ, Note 7 3.4 dB LOSAM Medium LOS Assert Level RLOSLVL = 5kΩ, Note 6 2 4.2 mVPP LOSDM Medium LOS De-assert Level RLOSLVL = 5kΩ, Note 6 6.2 9 mVPP HSYM Medium LOS Hysteresis RLOSLVL = 5kΩ, Note 7 2 3.4 5 dB LOSAH High LOS Assert Level RLOSLVL = 100Ω, Note 6 8 10.8 mVPP LOSDH High LOS De-assert Level RLOSLVL = 100Ω, Note 6 16.4 21 mVPP HSYH High LOS Hysteresis RLOSLVL = 100Ω, Note 7 2 3.4 5 dB B-3dB 3dB Bandwidth 1 GHz AV(Diff) Differential Voltage Gain 42 dB S21 Single-Ended Small-Signal Gain 30 36 dB Notes : 3. Amplifier in limiting mode. Input is a 200MHz square wave. 4. Deterministic jitter measured using 1.25Gbps K28.5 pattern, VID = 10mVPP. 5. Random jitter measured using 1.25Gbps K28.7 pattern, VID = 10mVPP. 6. See “Typical Operating Characteristics” for a graph showing how to choose a particular RLOSLVL for a particular LOS assert and its associated de-assert amplitude. 7. This specification defines electrical hysteresis as 20log (LOS De-assert/LOS 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 on that ratio, the optical hysteresis corresponding to the electrical hysteresis range 1dB-4.5 dB, shown in the AC characteristics table, will be 0.5dB-3dB Optical Hysteresis. 8. In real world applications, the LOS Release/Assert time can be strongly influenced by the RC time constant of the AC-coupling cap and the 50Ω input termination. To keep this time low, use a decoupling cap with the lowest value that is allowed by the data rate and the number of consecutive identical bits in the application (typical values are in the range of 0.001µF to 1.0µF). |
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