Cypress CY8C24094, CY8C24894, CY8C24994 0 0.01 0.1 1.0 10

CY8C24094, CY8C24794
CY8C24894, CY8C24994
Document Number: 38-12018 Rev. *M Page 33 of 47
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 10-4. 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 10-5. Typical Opamp Noise
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0.001 0.01 0.1 1 10 100Freq ( kHz)
dBV/rtHz
0
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0.1
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100
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0.001 0.01 0.1 1 10 100
Freq (kHz)
nV/rtHz
PH_BH
PH_BL
PM_BL
PL_BL
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