Cypress Semiconductor CY8C24894 Spécifications Page 30

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CY8C24894
Document Number: 001-53754 Rev. *F Page 30 of 50
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 6. 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 7. Typical Opamp Noise
100
1000
10000
0.001 0.01 0.1 1 10 100Fr eq ( kHz)
nV/rtHz
0
0.01
0.1
1.0
10
10
100
1000
10000
0.001 0.01 0.1 1 10 100
Freq (kHz)
nV/rtHz
PH_ BH
PH_ BL
PM_ B L
PL_ BL
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