When an analog signal is sampled, its value at that instant is unlikely to fall exactly on an ADC quantization level. The difference between the actual signal, and the theoretical value given by its ...

Figure 12-23. Regular ADC system. The quantization noise power is the area obtained from integrating the power spectral density function in the range of –f s /2 to f s /2. Now let us examine the ...

Figure 5 Nyquist Frequency Sampling & Quantization Noise​ Figure 6 Oversampling & Quantization Noise. Sigma-Delta Modulation. As the use of oversampling will improve the SNR of an ADC, it has some ...

Sampling is done using a sample hold circuit. A sample hold circuit has a switch, a resistive path and a capacitance on which the voltage is sampled when this switch is closed. The quantization in ...

Instead of demonstrating how 16x oversampling can add two bits of resolution to your 10-bit ADC, it’s a lot clearer with the one-bit example. [Paul’s] demo is great because it makes a strange ...

Oversampling works well only with white noise. Otherwise, e.g. a 50/60 Hz noise from the power lines, there might be fake results depending on the sampling rate and on the number of averaged samples.

5. For each sampling period, a sigma-delta ADC outputs a serial bit stream that’s converted to a representation of the input signal by digitally filtering and decimating the stream.

CTSD ADCs are sensitive to the frequency and jitter of an MCLK because of the above reasons. 5 But Analog Devices has identified solutions to work around these fallacies. For example, the ...