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Peak Reducing EMI Solution 4 of 8 February 2008 ASM3P2180A rev 1.2 Notice: The information in this document is subject to change without notice. AC Electrical Characteristics Symbol Parameter Min Typ Max Unit FS=0 6 10 CLKIN Input frequency FS=1 18 30 MHz FS=0 6 10 CLKOUT Output frequency FS=1 18 30 MHz tLH* Output rise time (measured at 0.8V to 2.0V) 1.2 1.3 1.4 nS tHL* Output fall time (measured at 2.0V to 0.8V) 0.8 0.9 1.0 nS tJC Jitter (cycle to cycle) 325 pS tD Output duty cycle 45 50 55 % *tLH and tHL are measured into a capacitive load of 15pF Typical Test Circuit +3.3V Spread spectrum output (EMI suppressed) XIN GND 0.1uF CLOAD XOUT CLKOUT VDD Crystal C1 C2 |
