DAC main features

AN3126

10/24

Doc ID16895 Rev 2

Figure 5. Pseudo random code generator embedded in the DAC

The noise produced by this generator has a flat spectral distribution and can be considered

white noise. However, instead of having a Gaussian output characteristics, it is uniformly

distributed, see Figure 6.

Figure 6. Noise waveform

The offset of the noise waveform is programmable. By varying this offset using a

preconfigured table of offsets (signal pattern), user can obtain a waveform which correspond

to the sum of the signal pattern and the noise waveform.