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PCS3P25811 Datasheet(PDF) 6 Page - ON Semiconductor

Part # PCS3P25811
Description  Spread Spectrum Clock Generator
PDF  9 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

PCS3P25811 Datasheet(HTML) 6 Page - ON Semiconductor

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PCS3P25811 and PCS3P25812 and PCS3P25814
Rev. 1 | Page 6 of 9 | www.onsemi.com
Application Schematic
Typical Crystal Specifications
Fundamental AT cut parallel resonant crystal
Nominal frequency
12MHz
Frequency tolerance
± 30 ppm or better at 25°C
Operating temperature range
-25°C to +85°C
Storage temperature
-40°C to +85°C
Load capacitance(CP)
18pF
Shunt capacitance
7pF maximum
ESR
25 Ω
Note: Note: CL is Load Capacitance and Rx is used to prevent oscillations at overtone frequency of the Fundamental frequency.
Typical Crystal Interface Circuit
CL = 2*(CP – CS),
Where CP = Load capacitance of crystal
CS = Stray capacitance due to CIN, PCB, Trace etc.
1
2
6
7
FSEL
XOUT
XIN
VSS
S0
S1
VDD
PCS3P25811/12/14
4
3
8
5
Y1
12MHz
0.1µF
CL
C3
CL
Centre Spread ±0.5%
12MHz (PCS3P25811)
24MHz (PCS3P25812)
48MHz (PCS3P25814)
VDD
VDD
VDD
ModOUT
Rx
CL
CL
Crystal
R



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