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SM802117UMG 데이터시트(PDF) 6 Page - Micrel Semiconductor |
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SM802117UMG 데이터시트(HTML) 6 Page - Micrel Semiconductor |
6 / 10 page Micrel, Inc. SM802117 October 2011 6 M9999-101311-B hbwhelp@micrel.com or (408) 955-1690 AC Electrical Characteristics (4, 5) VDD = VDDO1/2 = 3.3V ±5% or 2.5V ±5% VDD = 3.3V ±5%, VDDO1/2 = 2.5V ±5% TA = −40°C to +85°C. RL = 50Ω to VDDO − 2V Symbol Parameter Condition Min. Typ. Max. Units FOUT Output Frequency 125 MHz FREF Reference Input Frequency 25 MHz TR/TF LVPECL Output Rise/Fall Time 20% – 80% 80 175 350 ps ODC Output Duty Cycle 48 50 52 % TSKEW Output-to-Output Skew Within bank. Note 6 45 ps TLOCK PLL Lock Time 20 ms Tjit(∅) RMS Phase Jitter (7) 125MHz Integration Range (1.875MHz – 20MHz) Integration Range (12kHz – 20MHz) 115 254 fs Spurious Noise Components 25MHz -85 dBc Notes: 5. All phase noise measurements were taken with an Agilent 5052B phase noise system. 6. Defined as skew between outputs at the same supply voltage and with equal load conditions and same frequency; Measured at the output differential crossing points. 7. Measured using 25MHz crystal as the input reference source. If using an external reference input, use a low phase noise source. With an external reference, the phase noise will follow the input source phase noise up to about 1MHz. |
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