Precision D=A converter with decoder and current switches - converting current or voltage value with switched currents added

摘要

The decoder and current switches convert a binary word of bit length (W+1) into an analog current or voltage value. The currents switched by the current switches are added. If an 8 bit (W = 6+2) word is received at the input (E), whose most significant bit is tested for its weighting in a (MSB1) module, and the weighting is 1, the current switch is switched so that the upper current bus (Sa+) is fed with positive current. If the value of the MSB is 0, the least significant bit (W=6) is inverted. (1nv) and a switch is actuated by the MSB1 module, for supply to the A0...A5 inputs, which then activate the corresp. (m of 2 power W-1) = 63 current switches, and feed negative current to the bottom curve bus (Sa-). USE/ADVANTAGE - Digitally processing audio signals without loss of dynamic range.