Open AccessVersatile CCD‐based spectrometer with field programmable gate array controller core
Author(s) -
Ocaya R.O.
Publication year - 2016
Publication title -
iet science, measurement and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 49
eISSN - 1751-8830
pISSN - 1751-8822
DOI - 10.1049/iet-smt.2016.0063
Subject(s) - usb , spectrometer , photodiode , gate array , optics , multiplexing , physics , computer hardware , field programmable gate array , detector , optoelectronics , computer science , software , programming language , telecommunications
The design and implementation of a novel room temperature charge‐coupled device (CCD) spectrometer is presented. The timing generator and data acquisition circuits driving a 16,020 photodiode linear tricolour CCD detector capable of 24 dots per millimetre are described. Linear detection of ultraviolet, infrared and visible wavelengths over total wavelength range of 300 to 1000 nm of total wavelength range is possible by using three‐colour array multiplexing. The field programmable gate array logic processing realises a low‐cost, high‐speed digital spectrometer with USB interface. A finite state automaton is used to generate low‐skew, high‐speed complex clocks to drive the system. The output of the instrument is 8 bit array intensity versus wavelength array acquired using semi‐flash, 20 Mb/s analogue‐to‐digital converter, realising a 1.23 Gb/s per colour readout rate on the CCD. The resulting spectrometer is capable of USB 2.0 communication with high‐level processing programmes.