SI5315A-C-GMR Silicon Laboratories Inc, SI5315A-C-GMR Datasheet - Page 41
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SI5315A-C-GMR
Manufacturer Part Number
SI5315A-C-GMR
Description
IC CLK MULT 8KHZ-644.53MHZ 36QFN
Manufacturer
Silicon Laboratories Inc
Datasheet
1.SI5315B-C-GM.pdf
(58 pages)
Specifications of SI5315A-C-GMR
Input
*
Output
*
Frequency - Max
*
Voltage - Supply
*
Operating Temperature
*
Mounting Type
Surface Mount
Package / Case
36-VQFN
Frequency-max
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
6. Crystal/Reference Clock Input
The device can use an external crystal or external clock as a reference. If an external clock is used, it must be ac
coupled. With appropriate buffers, the same external reference clock can be applied to CKINn. Although the
reference clock input can be driven single ended (See Figure 17), the best performance is with a crystal or low
jitter, differential clock source. No external loading capacitors are required for normal crystal operation.
External Clock Source
LVPECL, CML, etc.
Figure 19. Differential External Reference Clock Input Example
Figure 18. Sinewave External Reference Clock Input Example
3.3 V
8 mA output current
0 dBm into 50
CMOS buffer,
Figure 17. CMOS External Reference Circuit
For 2.5 V operation, change 130 to 82 .
100
130
50
0.01 F
3.3 V
150
Rev. 0.26
150
0.1 F
0.01 F
0.01 F
0.01 F
0.1 F
0.1 µF
XB
XA
XA
XA
XB
XB
10 pF
Si5315
Si5315
10 k
Si5315
10 k
0.6 V
0.6 V
10 k
10 k
0.6 V
1.2 V
1.2 V
Si5315
41