Driving system for EMCCD (electron-multiplying charge coupled device) specific signal

2011 
The invention relates to a driving system for EMCCD (electron-multiplying charge coupled device) specific signal and belongs to the technical field of CCD (charge coupled device) drive. The system comprises a controller, a positive adjustable voltage element, a negative adjustable voltage element, two integrated drivers, three blocking circuits, three direct current level embedding circuits, two protection resistors, a P-type MOSFET (metal-oxide -semiconductor field effect transistor) and an N-type MOSFET. By the using of the system, the problems that the driving signal is high in frequency and amplitude and is difficult to realize are solved. The system is characterized by generating a high-speed high-pressure driving signal in totem-pole manner by alternately switching on two complementary high-speed powerful MOSFET, changing the resistance value of a digital potentiometer by the using of a digital control signal so as to change the positive and negative power values and finally changing the amplitude of the output signal, and controlling the minimum level value of the output signal by the using of the direct current embedding circuit. By the using of the system, the digital controls on amplitude of output signal, phase and duty cycle are realized, the influence of loading and working frequency on the output is tiny, and the pulse width and phase of the output signal are easily changed.
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