Integrated Circuit Systems, Inc.
S a General atDescription The ICS9112-43/44 is a high speed clock generator designed .
D to support Gigabit Ethernet system requirements.
The w ICS9112-43/44 generates 125 MHz from a 20 MHz crystal.
w wAn exact frequency multiplying ratio ensures better than ±100 ppm frequency accuracy using a standard AT crystal with external load capacitors (typically 33pF±5% for an 18pF load crystal).
Achieving ±100 ppm over four years requires the crystal to have a ±20 ppm initial accuracy, ±30 ppm temperature and ±5 ppm/year aging coefficients.
The ICS9112-43/44 with less than 50ps accumulative jitter is well suited for Gigabit Ethernet applications.
Frequency h Generat...

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