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FS7140-01 Datasheet(PDF) 13 Page - AMI SEMICONDUCTOR |
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FS7140-01 Datasheet(HTML) 13 Page - AMI SEMICONDUCTOR |
13 / 15 page 13 AMI Semiconductor - Rev. 3.0 www.amis.com FS7140-01 / FS7140-01g / FS7145 Programmable Phase-Locked Loop Clock Generator Data Sheet Table 13: AC Timing Specifications Parameter Symbol Conditions/Description Clock (MHz) Min. Typ. Max. Units Overall Output Frequency* fO(max) CMOS outputs 0 150 MHz PECL outputs 0 300 VCO Frequency* fVCO 40 400 MHz CMOS Mode Rise Time* tr CL = 7pF 1ns CMOS Mode Fall Time* tf CL = 7pF 1 ns PECL Mode Rise Time* tr CL = 7pF; RL = 65 ohm 1ns PECL Mode Fall Time* tf CL = 7pF; RL = 65 ohm 1 ns Reference Frequency Input (REF) Input Frequency FREF 80 MHz Reference High Time tREHF 3 ns Reference Low Time tREFL 3ns Sync Control Input (SYNC) Sync High Time tSYNCH for orderly CLK stop/start 3 TCLK Sync Low Time tSYNCL for orderly CLK stop/start 3 TCLK Clock Output (CLKP, CLKN) Duty Cycle (CMOS Mode)* Measured at 1.4V 50 % Duty Cycle (PECL Mode)* Measured at zero crossings of (VCLKP-VCLKN) 50 % Jitter, Long Term ( sg(t))* tj(LT) For valid programming solutions. Long-term (or cumulative) jitter specified is RMS position error of any edge compared with an ideal clock generated from the same reference frequency. It is measured with a time interval analyzer using a 500 microsecond window, using statistics gathered over 1000 samples. ps FREF/NREF > 1000kHz 25 ps FREF/NREF ~= 500kHz 50 ps FREF/NREF ~= 250kHz 100 ps FREF/NREF ~= 125kHz 190 ps FREF/NREF ~= 62.5kHz 240 ps FREF/NREF ~= 31.5kHz 300 ps Jitter, Period (peak-peak)* tj(DP) 40MHz < VCO Frequency < 100MHz 75 ps VCO Frequency > 100MHz 50 ps Unless otherwise stated, VDD = 3.3V ± 10%, no load on any output, and ambient temperature range TA = 0°C to 70°C. Parameters denoted with an asterisk ( * ) represent nominal characterization data and are not production tested to any specific limits. MIN and MAX characterization data are ± 3 s from typical. Table 14: Serial Interface Timing Specifications Parameter Symbol Conditions/Description Fast Mode Units Min. Max. Clock Frequency fSCL SCL 0 400 kHz Bus Free Time Between STOP and START tBUF 1300 ns Setup Time, START (repeated) tsu:STA 600 ns Hold Time, START thd:STA 600 ns Setup Time, Data Input tsu:DAT SDA 100 ns Hold Time, Data Input thd:DAT SDA 0 ns Output Data Valid From Clock tAA 900 ns Rise Time, Data and Clock tR SDA, SCL 300 ns Fall Time, Data and Clock tF SDA, SCL 300 ns High Time, Clock tHI SCL 600 ns Low Time, Clock tLO SCL 1300 ns Setupt Time, STOP tsu:STO 600 ns Unless otherwise stated, VDD = 3.3V ± 10%, no load on any output, and ambient temperature range TA = 0°C to 70°C. Parameters denoted with an asterisk ( * ) represent nominal characterization data and are not production tested to any specific limits. MIN and MAX characterization data are ± 3 s from typical. |
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