CY25100 Cypress Semiconductor, CY25100 Datasheet - Page 8

• Manufacturer Part Number: CY25100
• Description: Field- and Factory-Programmable Spread Spectrum Clock Generator for EMI Reduction
• Manufacturer: Cypress Semiconductor

Document #: 38-07499 Rev. *D
Informational Graphs
-10
-12
-14
-16
-2
-4
-6
-8
(Measured at 7th Harmonic Temp=25C, VDD=3.3V,
-10
0
0.0%
0.60%
0.55%
0.50%
0.45%
0.40%
Measured Spread% vs. VDD over Tem perature
SSCLK Attenuation vs. VDD over Tem perature
-2
-4
-6
-8
(Measured at 7th Harmonic w ith Fnom=100MHz and
(Target Spread = 0.5%, Fout=100MHz, C
0
2.7
Characterization board w ith CLOAD=15pF)
SSCLK EMI Attenuation vs. Spread%
SSCLK=100MHz, Measured on Cypress
0.5%
2.7
1.0%
3
Spread=0.5%, C
3
1.5%
VDD (V)
VDD (V)
3.3
2.0%
3.3
(continued)
Spread %
2.5%
LOA D
3.6
3.6
3.0%
=15pF)
[6]
3.5%
3.9
3.9
LOA D
4.0%
=15pF)
4.5%
-40C
25C
85C
-40C
25C
85C
5.0%
-10
-12
-14
-16
-18
-20
-40
SSCLK Attenuation vs. VDD over Tem perature
(Measured at 7th Harmonic w ith Fnom=100MHz and
6.00%
5.50%
5.00%
4.50%
4.00%
(Target Spread = 5.0%, Fout=100MHz, C
2.7
(SSCLK=100MHz, VDD=3.3V, CLOAD=15pF, +/-
Max Cycle-Cycle Jitter on SSCLK vs.
2.7
Measured Spread% vs. VDD over
- 20
3
Spread=5.0%, C
200
175
150
125
100
75
50
25
2%spread, REFCLK off)
0
3
0
Tem perature (deg C)
VDD (V)
Tem perature
Tem perature
VDD (V)
3.3
3.3
20
LOAD
3.6
3.6
40
=15pF)
3.9
3.9
60
LOA D
CY25100
=15pF)
Page 8 of 11
80
-40C
25C
85C
-40C
25C
85C
100