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Analog power supply and regulators

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jorbar

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analog power supply

when the sensitive analog block is integrated with multiple switching regulators
in one chip, is it helpful that we use the independent regulator for digital and
analog blocks ?
 

alenhan

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analog power supply

Yes, if analog block is sensitive, you need another
regulator to supply power for digital block. because
badgap reference is very sensitive to digital signal.
the digital part will affect reference signal, so your
regulator can not get accurate voltage
 

yeewong_su

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analog power supply

yeah. You must separate the power supply for analog and digital. general you must separate it from PAD
 

Davood Amerion

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analog power supply

you must take special care about it's grounds too.
 

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