  CCD was born in Bell Laboratories in 1969 and has been widely used in various
fields. Its ultra-low noise and high quantum efficiency make it work well in
particle physics, high energy physics, nuclear physics and astrophysics.
Nowadays, more and more CCD cameras have been developed for medical diagnosis,
scientific experiments, aerospace, military exploration and other fields. For
the wide range of CCD cameras, a Non-vacuum-cooling compact (NVCC) scientific
CCD camera has been developed, including FPGA-based low noise clock and bias
driver circuit, data acquisition circuit, STM32-based temperature control
design. At the same time, the readout noise of the imaging system is studied
emphatically. The scheme to generate the CCD clock and the bias driving circuit
through ultralow noise LDOs is proposed. The camera was tested in a variety of
environments, and the test results show that the system can run at a maximum
rate of 5M pixels/s and readout noise is as low as 9.29e^- when the CCD readout
speed is 500K pixels/s. Finally, a series of stability tests were carried out
on the camera system.
