대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2006년도 하계종합학술대회
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- Pages.485-486
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- 2006
링 오실레이터를 가진 CMOS 온도 센서
CMOS Temperature Sensor with Ring Oscillator for Mobile DRAM Self-refresh Control
- 김찬경 (성균관대학교 정보통신공학부 전자전기공학과) ;
- 이재구 (성균관대학교 정보통신공학부 전자전기공학과) ;
- 공배선 (성균관대학교 정보통신공학부 전자전기공학과) ;
- 전영현 (삼성전자)
- Kim, Chan-kyung (School of Information and Communication Engineering, Sungkyunkwan University) ;
- Lee, Jae-Goo (School of Information and Communication Engineering, Sungkyunkwan University) ;
- Kong, Bai-Sun (School of Information and Communication Engineering, Sungkyunkwan University) ;
- Jun, Young-Hyun (DRAM Design, Memory Division, Samsung Electronics)
- 발행 : 2006.06.21
초록
This paper proposes a novel low-cost CMOS temperature sensor for controlling the self-refresh period of a mobile DRAM. In this temperature sensor, ring oscillators composed of cascaded inverter stages are used to obtain the temperature of the chip. This method is highly area-efficient, simple and easy for IC implementation as compared to traditional temperature sensors based on analog bandgap reference circuits. The proposed CMOS temperature sensor was fabricated with 80 nm 3-metal DRAM process. It occupies a silicon area of only about less than
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