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CY25818 Datasheet(PDF) 5 Page - Cypress Semiconductor

Part No. CY25818
Description  Spread Spectrum Clock Generator
Download  7 Pages
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Maker  CYPRESS [Cypress Semiconductor]
Homepage  http://www.cypress.com
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CY25818 Datasheet(HTML) 5 Page - Cypress Semiconductor

   
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CY25818/19
Document #: 38-07362 Rev. *B
Page 5 of 7
SSCG Profiles
CY25818/19 SSCG products use a non-linear “optimized”
frequency profile as shown in Figure 6 and Figure 7. The use
of Cypress proprietary “optimized” frequency profile maintains
flat energy distribution over the fundamental and higher order
harmonics. This results in additional EMI reduction in
electronic systems.
Application Schematic
Notes:
3. XIN = 16.0 MHz; S0 = 1; SSCLK = 16.0 MHz; BW = –2.14%.
4. Xin = 32.0MHz; S0 = 1; SSCLK = 32.0 MHz; BW = -2.15%
Figure 6. CY25818 Spread Spectrum Profile
(Frequency vs. Time)[3]
Figure 7. CY25819 Spread Spectrum Profile
(Frequency vs. Time)[4]
Vdd
1
8
14.3 M Hz
or
27.0 M Hz
Vss
S0
XIN
XOUT
SSCLK
Vdd
CY25818
CY25819
3
4
0.1 uF
C3
C2
C3
27 pF
27 pF
14.3 MHz (CY25818)
27.0 MHz (CY25819)
REFCLK
5
2
7
PD#
6
Figure 8. Typical Application Schematic
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