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ICS84025 датащи(PDF) 6 Page - Integrated Circuit Systems |
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ICS84025 датащи(HTML) 6 Page - Integrated Circuit Systems |
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6 / 12 page ![]() 84025EM www.icst.com/products/hiperclocks.html REV. A APRIL 16, 2003 6 Integrated Circuit Systems, Inc. ICS84025 CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZER WITH FANOUT BUFFER PRELIMINARY SCOPE Qx LVCMOS 3.3V OUTPUT LOAD AC TEST CIRCUIT 3.3V/2.5V OUTPUT LOAD AC TEST CIRCUIT OUTPUT SKEW 3.3V/1.8V OUTPUT LOAD AC TEST CIRCUIT odc, t PW & tPERIOD SCOPE Qx LVCMOS 2.05V±5% V DDO GND = -1.25V±5% V DD 1.25V±5% SCOPE Qx LVCMOS V DD, VDDA, VDDO = 1.65V±5% GND = -1.65V±5% tsk(o) V DDO 2 V DDO 2 Qy Qx Q0:Q5 ➤ ➤ V DDO 2 V DDO 2 V DDO 2 Cycle-to-Cycle Jitter tjit(cc) = tcycle n –tcycle n+1 1000 Cycles tcycle n tcycle n+1 Period Jitter VOH VREF VOL Mean Period (First edge after trigger) Reference Point (Trigger Edge) 1 σ contains 68.26% of all measurements 2 σ contains 95.4% of all measurements 3 σ contains 99.73% of all measurements 4 σ contains 99.99366% of all measurements 6 σ contains (100-1.973x10-7)% of all measurements Histogram Pulse Width t PERIOD t PW t PERIOD odc = V DDO 2 Q0:Q5 OUTPUT RISE/FALL TIME Clock Outputs 20% 80% 80% 20% t R t F PARAMETER MEASUREMENT INFORMATION GND = -0.9V±0.075V V DDO V DD 2.4± 0.9V 0.9V±0.075V |
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