Digital Signal Processing Reference
In-Depth Information
Bi n p atterns
Time domain
Bi nary/Deca
T i me do ma in
Bin ärmuster
Zei tberei ch1
Bin är
/
Deca
Zeitbereich2
Illustration 185:
Principle of a D/A converter (DASYLab simulation)
Five retangular signals form a binary pattern generator in this simulation which increments from 00000 to
11111 and from 0 to 31. From the top to the bottom the frequency is doubled in each case. This produces a
linear rising step curve or a periodic sawtooth. Exactly as in practice there are several interference pulse
peaks to be seen. The D/A converter is designed purely according to a formula in which every bit is multi-
plied 1,2,4, 8 or 16 depending on its weight.
