Specifications

CY8C24094, CY8C24794
CY8C24894, CY8C24994
Document Number: 38-12018 Rev. AH Page 39 of 64
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 8.1 K resistance and the external capacitor.
Figure 12. Typical AGND Noise with P2[4] Bypass
At low frequencies, the opamp noise is proportional to 1/f, power independent, and determined by device geometry. At high
frequencies, increased power level reduces the noise spectrum level.
Figure 13. Typical Opamp Noise
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100
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0.001 0.01 0.1 1 10 100Fr eq (kHz)
nV/rtHz
0
0.01
0.1
1.0
10
10
100
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0.001 0.01 0.1 1 10 100
Freq ( k Hz )
nV/rtHz
PH_ BH
PH_ BL
PM_B L
PL_ BL