CY8C29x66 Final Data Sheet
3. Electrical Specifications
When bypassed by a capacitor on P2[4], the noise of the analog ground signal distributed to each block is reduced by a factor of up
to 5 (14 dB). This is at frequencies above the corner frequency defined by the on-chip 8.1k resistance and the external capacitor.
Figure 3-9. Typical AGND Noise with P2[4] Bypass
dBV/rtHz
10000
0
0.01
0.1
1.0
10
1000
100
0.001
0.01
0.1 Freq (kHz)
1
10
100
At low frequencies, the opamp noise is proportional to 1/f, power independent, and determined by device geometry. At high frequen-
cies, increased power level reduces the noise spectrum level.
Figure 3-10. Typical Opamp Noise
nV/rtHz
10000
PH_BH
PH_BL
PM_BL
PL_BL
1000
100
10
0.001
0.01
0.1
Freq (kHz)
1
10
100
August 5, 2008
Document No. 38-12013 Rev. *J
33
CYPRESS [ CYPRESS SEMICONDUCTOR ]
