출력 전압 피드백을 통한 능동 화소 센서의 동작 범위 확장
Dynamic range expansion of active pixel sensor with output voltage feedback
3
조회
0
다운로드
4
인용
0
참고문헌
키워드
초록
In this paper, a wide dynamic range active pixel sensor(APS) with output voltage feedback structure has been designed by a 2-poly 4-metal 0.35 μm standard CMOS technology. We presented a novel APS with output voltage feedback, which exhibits a wide dynamic range. The dynamic range increases at the cost of an additional diode and an additional MOSFET. The output voltage feedback structure enables the control of the output voltage level by itself, as incident light power varies. It is confirmed that the light level which the output voltage level of proposed APS is saturated is about 120,000 lux, which is higher than that of a conventional 3-transistor APS.
Abstract
In this paper, a wide dynamic range active pixel sensor(APS) with output voltage feedback structure has been designed by a 2-poly 4-metal 0.35 μm standard CMOS technology. We presented a novel APS with output voltage feedback, which exhibits a wide dynamic range. The dynamic range increases at the cost of an additional diode and an additional MOSFET. The output voltage feedback structure enables the control of the output voltage level by itself, as incident light power varies. It is confirmed that the light level which the output voltage level of proposed APS is saturated is about 120,000 lux, which is higher than that of a conventional 3-transistor APS.
참고문헌 (13)
- S. K. Mendis, "CMOS active pixel image sensor", IEEE Trans. Elect. Dev., 41(3), pp.452~453 (1994)
- E. Fossum, "CMOS image sensor : electronic camera on a chip", IEEE Trans. Elect. Dev., 44(10), pp.1689~1698 (1997)
- S. K. Mendis, "CMOS active pixel image sensors for highly integrated imaging systems", IEEE J. Solid-State Circuits, 32(2), pp.187~197 (1997)
- M. Bigas, "Review of CMOS image sensors", Microelectronics Journal, 37, pp.433~451 (2006)
- D. Stoppa, "Novel CMOS image sensor with a 132-dB dynamic range", IEEE J. Solid-State Circuits, 37(12), pp.1846~1852 (2002)
- W-J Liu, "A high dynamic-range CMOS image sensor with locally adjusting charge supply mechanism, Circuits and Systems", 48th Midwest Symposium on, 통권 : 1, pp.384~387 (2005)
- N. Akahane, "A sensitivity and linearity improvement of a 100-dB dynamic range CMOS image sensor using a lateral overflow integration capacitor", IEEE J. Solid-State Circuits, 41(4), pp.851~858 (2006)
- G. Storm, "Extended dynamic range from a combined linear-logarithmic CMOS image sensor", IEEE J. Solid-State Circuits, 41(9), pp.2095~2106 (2006)
- K. Hara, "A linear-logarithmic CMOS sensor with offset calibration using an infected charge signal", ISSCC Digest of Technical Papers, 1, pp.354~355 (2005)
- S. Shafie, "A dynamic range expansion technique for CMOS image sensors with dual charge storage in a pixel and multiple sampling", MDPI Sensors 2008, 8, pp.1915~1926 (2008)
- M. Mase, "A wide dynamic range CMOS image sensor with multiple exposure-time signal outputs and 12-bit column-parallel cyclic A", D converters, 2005, pp.40(12), 2787~2795
- 서상호, "고감도 능동픽셀센서를 위한 PMOSFET 광검출기의 특성", 센서학회지, 12(6), pp.1~155 (2003), 한국센서학회
- 윤형준, "전자식 셔터와 A", D 변환기가 내장된 CMOS 능동 픽셀 센서, 2005, pp.14(4), 272~277[DOI]