| abstract |
The invention discloses a signal loss real-time detection circuit and a signal loss real-time detection method. The REF is used for inputting a signal to be detected, the operational amplifier circuit receives the input signal without distortion to obtain a signal REF _ Buf, the first comparator is used for converting the reference signal REF _ Buf into a square wave signal REF _ SW with the duty ratio of 50%, and the second comparator is used for detecting whether the amplitude of the signal REF _ Buf meets the system requirement to obtain a square wave signal REF _ Peak; the signal REF _ SW enters an Edge detection circuit to obtain an Edge detection signal REF _ Edge, the clock circuit and the clock processing circuit are used for generating clock signals CLK 1-CLK 3, the clock signals are input into a rear-stage median detection circuit to generate a median signal REF _ Mid, and the signals REF _ Peak and REF _ Mid enter a latch to obtain a signal loss detection result. The signal loss real-time detection circuit does not depend on peripheral parameters, and is easy to integrate, high in detection precision and wide in detection frequency range. |