SI5317D-C-GM Просмотр технического описания (PDF) - Silicon Laboratories
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SI5317D-C-GM Datasheet PDF : 50 Pages
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Si5317
5.1. Crystal/Reference Clock Selection
An external low-jitter clock or a low-cost crystal is used as part of a fixed-frequency oscillator within the DSPLL.
This external clock is required for the device to perform jitter attenuation. Silicon Laboratories recommends using a
high-quality crystal.
In VCO freeze, the DSPLL remains locked to this external clock. Any changes in the frequency of this clock when
the DSPLL is in VCO freeze will be tracked by the output of the device. Note that crystals can have temperature
sensitivities. Table 13 shows the recommended crystals.
Table 13. Approved Crystals
Manufacturer
Part Number
Web Address
Stability
Initial
Accuracy
TXC
7MA1400014
http://www.txc.com.tw
100 ppm
100 ppm
Connor Winfield
CS-018-114.285M http://www.conwin.com
100 ppm
100 ppm
Connor Winfield
CS-023-114.285M http://www.conwin.com
20 ppm
20 ppm
NDK
NX3225SA
http://www.ndk.com/en/
EXS00A-CS00871
100 ppm
100 ppm
NDK
NX3225SA
http://www.ndk.com/en/
EXS00A-CS00997
20 ppm
20 ppm
Siward
XTL573200NLG-
114.285 MHz-OR
http://www.siward.com
20 ppm
20 ppm
Saronix/eCera
FLB420001
http://www.pericom.com/saronix
100 ppm
100 ppm
Mtron
M1253S071
http://www.mtronpti.com
100 ppm
100 ppm
Note: While these crystals meet the preceding criteria according to their data sheets, Silicon Laboratories, Inc. does not
guarantee operation with the Si5317, nor does Silicon Laboratories endorse one supplier of crystals over another.
Contact Silicon Labs for details and a current list of crystal vendors and recommended part numbers.
Preliminary Rev. 0.15
31
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