Download - Microchip
Download - Microchip
Download - Microchip
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Oversampling improves SNR<br />
<br />
Oversampling and Signal to<br />
Noise<br />
Each oversample by a factor of 4 gives a 6 dB or<br />
1-bit<br />
improvement in SNR<br />
For a 1-bit 1<br />
ADC and oversampling there are:<br />
2-bits for 4 x oversampling (4 1 )<br />
3-bits for 16 x oversampling (4 2 )<br />
4-bits for 64 x oversampling (4 3 )<br />
.. .. .. ..<br />
.. .. .. ..<br />
24-bits for 4 x oversampling !!!!!<br />
Oversampling to 24-bits from a 1-bit 1<br />
ADC is not practical<br />
© 2004 <strong>Microchip</strong> Technology Incorporated. All Rights Reserved. Filter Now, Later, or Never 10
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