By multiplying the log10 of this ratio by 20, SNR in decibels may be derived. Assuming that the input signal is sinusoidal, the rms signal equals the converter's full-scale range divided by the square root of 2. All analog to digital converters (ADC) have rms noise that the quantization...
Learn what is a signal amplifier, how does it work, its applications, benefits, and how they are used in the context of a data acquisition (DAQ) system.
So technically, the ADC is producing the signal (since it is the dc offset) and the DDC is moving it around just a bit. This is where good frequency planning comes in. Proper frequency planning can help to avoid situations such as this one. Now that we’ve looked at an example using...
When operating the DDC in complex output mode with the HB1 filter enabled, the decimation ratio is equal to two and the output sample rate is half of the input sample clock. Extending the plot from Figure 2 to show the effects of the aliasing of the ADC we have what is shown in Figu...
(ADC) within the plaque. This is of particular interest for detecting lipid accumulation, one of the major risk factors associated with plaque rupture. Contrast-enhanced MRI has been used to assess changes in vessel wall permeability, which can be increased both through disruption of the luminal ...
High SNR and SFDR: With a signal-to-noise ratio of 78.3dB and a spurious-free dynamic range of 98dB, the ADC excels in distinguishing signal from noise, crucial in varied signal environments. (Dither=off SFDR=103dBFS @15MHz, Dither=on SFDR=113dBFS @15MHz) Dithering and Data Output Ra...
For an increasing amount of electrons, the shot noise increases as well. Noise however should not be considered on its own. In applications, the noise has to be seen relative to the signal. In practice, the Signal to Noise Ratio (SNR) is used. The SNR for higher signal levels is domina...
The resolution, which is termed number of subconversions must be set according to the design. As mentioned in previous post, higher number of sub-conversions, the better will be the signal. It is recommended to start with 100 and increase it till you obtain a...
This is easier to imagine if you think of significantly reducing the frame rate of a 30fps video, in which a spoked wheel appears to be rotating properly. However, when the frame rate change occurs, the less images (less samples is better term) of the wheel rotating may make it look li...
In any case, we only actually needa bit depth with an SNR high enough to accommodate the dynamic range between the softest and loudest signal strength we’re recording. With this in mind, 16-bit audio is plentiful for the beginning of your journey. ...