Overclocking Readout Design of Focusing and Leveling Linear Array CCD Imaging System

Zuoda Zhou; Dihu Chen; Meina Lu; Wei Jin; Lai Wei; Wentao Wang; Maoxin Song; Jin Hong

doi:10.3788/AOS202141.1822001

Acta Optica Sinica, Volume. 41, Issue 18, 1822001(2021)

Overclocking Readout Design of Focusing and Leveling Linear Array CCD Imaging System

Zuoda Zhou^1,2,3, Dihu Chen^1,2,3、*, Meina Lu^1,3, Wei Jin^1,3, Lai Wei^1,2,3, Wentao Wang^1,2,3, Maoxin Song^1,2,3, and Jin Hong^1,2,3

Author Affiliations

¹Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, China

²University of Science and Technology of China, Hefei, Anhui 230026, China

³Key Laboratory of Optical Calibration and Characterization, Chinese Academy of Sciences, Hefei, Anhui 230031, China

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Figures & Tables(12)

Fig. 1. Structure of focusing and leveling electronics system

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Fig. 2. Structure of S11156-2048 linear array CCD detector

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Fig. 3. Power conversion scheme

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Fig. 4. Timing drive circuit. (a) SG, P1H and P2H pin drivers; (b) ARG pin drive; (c) RG pin drive; (d) TG pin drive

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Fig. 5. Waveform of detector drive signal

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Fig. 6. Analog front-end circuit

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Fig. 7. Waveform of detector output signal and sampling pulse

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Fig. 8. Detector drive circuit board

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Fig. 9. CCD photoelectric performance test site. (a) Test system; (b) internal structure of darkroom

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Fig. 10. Signal-to-noise ratio comparison test curves at different readout frequencies. (a) 6.0 MHz; (b) 12.5MHz

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Table 1. Drive current of timing drive pin of S11156-2048 detector

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Table 1. Drive current of timing drive pin of S11156-2048 detector

Function	Symbol	Typicalcapacitance /pF	Voltage amplitude /V	Minimumedge time /ns	Maximum drivecurrent /mA
All reset gate	ARG	100	7.0	200	2.8
Transfer gate	TG	100	15.5	20	62.0
Horizontal register	P1H/P2H	200	11.0	10	176.0
Summing gate	SG	10	11.0	10	8.8
Reset gate	RG	10	13.0	5	20.8

Table 2. Charge transfer efficiency at different readout frequencies
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Table 2. Charge transfer efficiency at different readout frequencies
Readout frequency /MHz L A E_CT
6.0 2217 22080 0.999951
12.5 1168 21814 0.999974

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Zuoda Zhou, Dihu Chen, Meina Lu, Wei Jin, Lai Wei, Wentao Wang, Maoxin Song, Jin Hong. Overclocking Readout Design of Focusing and Leveling Linear Array CCD Imaging System[J]. Acta Optica Sinica, 2021, 41(18): 1822001

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