Digital-to-analog converter

In an analog-to-digital converter for consecutively converting analog signals received in parallel on a plurality of incoming lines into corresponding binary encoded digital output signals, the improvement comprising:

• (a) a plurality of filter circuits for band pass filtering of incoming analog signals, each having an input connected to a respective incoming line, and an output and including a filter capacitor connected to said output;
• (b) a selector unit having a plurality of signal inputs, each input being connected to a respective one of said filter capacitors, and an output for delivering a sampling signal received from a presently through-connected incoming line during a respective sampling interval;
• (c) a grounded network connected to said output of said selector unit and comprising a storage capacitor and a switch arranged in parallel to said storage capacitor for temporarily short-circuiting said capacitor after each sampling interval;
• and
• (d) a comparator having a first and a second input and an output, said first input being connected to said output of said selector unit and said second input being supplied by an analog reference voltage source;
• wherein said grounded network is designed such that it is capable of both storing a sampling signal during the corresponding sampling interval, and simulating a common resistance consecutively associated with a respective one of the filter capacitors to form an individually dedicated resistor-capacitor filter circuit during each of the sampling intervals.