CY8C24094, CY8C24794, CY8C24894, and CY8C24994 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 3-4. 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 3-5. Typical Opamp Noise
nV/rtHz
10000
PH_BH
PH_BL
PM_BL
PL_BL
1000
100
10
0.001
0.01
0.1
1
10
100
Freq (kHz)
February 15, 2007
Document No. 38-12018 Rev. *J
34
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