Abstract: A time interval analyzer for measuring time intervals between events in an input signal includes a trigger circuit that receives an input signal and that outputs a trigger signal at a triggering level upon occurrence of the event. A first current circuit has a constant current source or a constant current sink. A second current circuit has (1) a current sink where the first current circuit has a constant current source or (2) a current source where the first current circuit has a constant current sink. A capacitor and a shunt are operatively disposed in parallel with respect to the first current circuit. The shunt is disposed between the first current circuit and the second current circuit.