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CCD imager output signal processing using drain output signal and wide- band sampled detected floating-element output signal
CCD imager output signal processing using drain output signal and wide- band sampled detected floating-element output signal
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机译:使用漏极输出信号和宽带采样检测到的浮动元件输出信号处理CCD成像器输出信号
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摘要
First and second output signals are taken from a floating element in a CCD charge transfer channel and from the terminal drain diffusion of that CCD charge transfer channel. The floating element is part of an electrometer, and the electrometer response is wide-band sampled at the CCD charge transfer channel clocking rate. Current flow through the terminal drain diffusion is sensed by the input circuit of a low l/f noise transresistance amplifier. Continuous-frequency-spectrum low-noise output signal is generated from the low-frequency components of the transresistance amplifier response and from the high-frequency components of the processed second output signal. Subsequent filtering removes unwanted clock and aliased frequency components.
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