Timing Jitter of ECL ICs Under High Clock Frequency and Pulsed Electromagnetic Fields

This paper presents the effect of increase in clock frequency and pulsed electromagnetic noise on timing jitter of an ECL circuit comprising of D-Flip flops and mono-shots. The radiated noise is generated by pulsed discharge of capacitor bank through flash lamps in a high power Table top Tera watt laser chain. We conducted the study on a pulse selector and trigger circuit designed to select a single laser pulse from a laser oscillator operating at 100 MHz. The pulse selection is carried out in synchronization with an external laser amplifier operating in single shot mode. The circuit consists of a delay flip flop to synchronize the 100 MHz clock from the repetitive laser and the external laser operating in single shot mode. It also consists of ECL mono-shots to generate low jitter variable signal delays in the range 40 ns to 1usec.