![]() ![]() The role of each digital signal is described below: The DDC is housed on a compact custom circuit board manufactured by CosyLab (Ljubljana, Slovenia), where the charge collected by a photodiode is split across two DDC inputs to give 16 photodiodes per DDC. Each of the 32 inputs on the DDC has two integrators, allowing for zero-deadtime measurements: while one integrator digitises and transfers data, the other measures the input current. It is capable of measuring the currents of up to 32 photodiodes with an adjustable integration time (160μs–1s) and full-scale range (FSR, 12pC–350pC). DDC232 design features and demo given in this presentation.Ī Texas Instruments (Dallas, Texas, United States) DDC232CK (DDC) was chosen as the current-input analogue-to-digital converter for its speed, large dynamic range and low power requirements.First operational tests discussed in this presentation.UART interface between FPGA and PC discussed in this presentation. ![]()
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