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SM802128UMGTR 数据表(PDF) 6 Page - Micrel Semiconductor |
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SM802128UMGTR 数据表(HTML) 6 Page - Micrel Semiconductor |
6 / 12 page Micrel, Inc. SM802128 January 2012 6 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 = 3.3V ±5% or 2.5V ±5% TA = −40°C to +85°C. RL = 50Ω to VDDO − 2V Symbol Parameter Condition Min Typ Max Units FOUT1 Output Frequency 1 FSEL = 1 156.25 MHz FOUT2 Output Frequency 2 FSEL = 0 312.5 MHz FREF Reference Input Frequency 25 MHz TR/TF ODC LVPECL Output Rise/Fall Time Output Duty Cycle 20% – 80% 80 175 350 ps 48 50 52 % TSKEW Output-to-Output Skew Q1 – Q8 (6) 45 ps TLOCK PLL Lock Time 20 ms Tjit(∅) RMS Phase Jitter (7) 156.25MHz Integration Range (1.875MHz – 20MHz) Integration Range (12kHz – 20MHz) 312.5MHz Integration Range (1.875MHz – 20MHz) Integration Range (12kHz – 20MHz) 110 250 110 250 fs Spurious Noise Components 6.25MHz using 156.25MHz 12.5MHz using 312.5MHz -80 -85 dBc Notes: 1. Permanent device damage may occur if absolute maximum ratings are exceeded. This is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. 3. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the PCB. 4. The circuit is designed to meet the AC and DC specifications shown in the above table after thermal equilibrium has been established. 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 a 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 offset frequency. |
类似零件编号 - SM802128UMGTR |
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类似说明 - SM802128UMGTR |
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