IMIFS781BZB Cypress Semiconductor Corp, IMIFS781BZB Datasheet - Page 7

• Manufacturer Part Number: IMIFS781BZB
• Description: IC CLOCK SPREAD SPECTRUM
• Manufacturer: Cypress Semiconductor Corp

Specifications of IMIFS781BZB

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Document #: 38-07029 Rev. *F
Crystal is 20 MHz is 1st Order
with 18 pF load capacitance.
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.
Mount loop filter components as
close to LF pin as possible.
27 pF
** Occasionally, C8 is used to
create a second pole for this loop
filter. Refer to Loop Filter Selection
table.
C2
C3
27 pF
C7
R6
Figure 5. FS781 Schematic
20 MHz
Y1
.
**
C8
1
2
3
4
Xin
Xout
S1
LF
FS781
(SOIC)
FSOUT
VDD
VSS
S0
8
7
6
5
C1
0.1 uF
FS781/82/84
VDD
FSOUT
Page 7 of 12
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