... | @@ -27,6 +27,15 @@ kit** |
... | @@ -27,6 +27,15 @@ kit** |
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input**
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input**
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[![](/uploads/9c9d7164830fe341ea9b59b2812624d7/noise_mini.jpg)](https://www.ohwr.org/project/fmc-adc-100m14b4cha/uploads/4410a78676d9f4a3b9150f3b15598aaa/noise.jpg)
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[![](/uploads/9c9d7164830fe341ea9b59b2812624d7/noise_mini.jpg)](https://www.ohwr.org/project/fmc-adc-100m14b4cha/uploads/4410a78676d9f4a3b9150f3b15598aaa/noise.jpg)
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SNR calculation:
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SNR = 20 \* log10( (16384/2/sqrt(2)) / (std(noise\_samples) ), where:
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16384/2/sqrt(2) - RMS of the sinewave covering all the dynamic range of
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the ADC
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std(noise\_samples) - standard deviation of the noise, which is the RMS
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value of the noise
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20 \* log10() - for dB calculation
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<table>
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<table>
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<tbody>
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<tbody>
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<tr class="odd">
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<tr class="odd">
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... | @@ -269,6 +278,10 @@ https://www.ohwr.org/project/fmc-adc-100m14b4cha/uploads/1c45028663ca841392a0dce |
... | @@ -269,6 +278,10 @@ https://www.ohwr.org/project/fmc-adc-100m14b4cha/uploads/1c45028663ca841392a0dce |
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<td>30-07-2010</td>
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<td>30-07-2010</td>
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<td>Changes for the second version of the PCB have been stored. Document has been added to the wiki.</td>
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<td>Changes for the second version of the PCB have been stored. Document has been added to the wiki.</td>
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</tr>
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</tr>
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<tr class="odd">
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<td>30-07-2010</td>
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<td>ENOB & SNR measured!</td>
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</tr>
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</tbody>
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</tbody>
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</table>
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</table>
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