| 摘要 |
PURPOSE:To set a high resolution time and to perform the operation even with a trigger signal of high repeat rate by turning on only one switch by the trigger signal to perform integration in one direction and turning on only the other switch by the output of a first comparator to perform integration in the reverse direction thereafter and obtaining the output based on the output of a second comparator. CONSTITUTION:A circuit is constituted to include two switches SW1 and SW2 which control connections between two constant current sources 4 and 5 and an integrating capacitor C, a first comparator 2 which compares the charging voltage of the integrating capacitor C with a set voltage corresponding to a set value, and a second comparator 6 which compares the charging voltage of the integrating capacitor C with a reference voltage. After only one switch is turned on by the trigger signal to perform integration in one direction, only the other switch is turned on by the output of the first comparator 2 to perform integration in the reverse direction, and the output is obtained based on the output of the second comparator 6. Thus, the high resolution time can be set, and the circuit can be operated even with the trigger signal of high repeat rate. |
