RASCH NACH DEM ZAEHLVERFAHREN ARBEITENDER ANALOG/DIGITAL-UMSETZER

摘要

The fast A/D converter can be readily integrated and consists of a pair of clocked counters (72, 71) reset by a control circuit (St). The analog input signal (E) is switched (S3) to a storage capacitor (C) coupled to the input of a trigger (S). Two constant current sources can be switched to the trigger input by switches (S1, S2) controlled from the control circuit. The trigger detects signal polarity on the capacitor. The control circuit controls the switching of the clock pulses to the counters and their read out eg by means of two AND-gates (U) and an OR-gate (O).