EXTERNAL SYNCHRONIZING TYPE SAMPLE HOLDING CIRCUIT

摘要

PURPOSE:To surely output creset value of desired input signals even when the input signals have much distortion in TDMA system by generating a signal that determines sampling timing of input signals making an external synchronizing signal a trigger. CONSTITUTION:An external synchronizing signal is inputted from a terminal 2 to a delay time adjusting circuit 3, and delay time of input signals is adjusted. The output signals are inputted to a sampling time determining circuit 4 for determining time for sampling detected signals. The circuit 4 adjusts sampling time avoiding unnecessary generated signals. On the other hand, input signals from a terminal 1 are inputted to a peak value holding circuit 5. The circuit 5 detects the input signal level at this point of time and holds detected level until a sampling time adjusting signal is received next. The held signal is outputted as the crest value of detected signals.