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參數(shù)資料
| 型號： | FS784 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Low EMI Spectrum Spread Clock |
| 中文描述： | 低EMI擴頻時鐘頻譜 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大小： | 207K |
| 代理商： | FS784 |
FS781/82/84
Document #: 38-07029 Rev. *E
Page 7 of 12
with 18 pF load capacitance.
**
** Occasionally, C8 is used to
create a second pole for this loop
filter. Refer to Loop Filter Selection
table.
.
Mount loop filter components as
close to LF pin as possible.
Crystal is 20 MHz is 1st Order
If Crystal load capacitance is
different than 18 pF, C1 and C2
must be re-calculated.
For third overtone crystals, a
parallel or series resonant trap
is required.
R6
C1
0.1 uF
C2
27 pF
C3
27 pF
Y1
20 MHz
C8
C7
FS781
(SOIC)
Xin
1
Xout
2
S1
3
LF
4
VSS
5
FSOUT
6
S0
7
VDD
8
VDD
FSOUT
Figure 5. FS781 Schematic
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