Browse > Article

Implementation of 24-Channel Capacitive Touch Sensing ASIC  

Lee, Kyoung-Jae (Department of Electronics and Communications Engineering, Kwangwoon University)
Han, Pyo-Young (Department of Electronics and Communications Engineering, Kwangwoon University)
Lee, Hyun-Seok (Department of Electronics and Communications Engineering, Kwangwoon University)
Bae, Jin-Woong (Department of Information and Telecommunication Engineering, Korea Aerospace University)
Kim, Eung-Soo (Department of Information and Telecommunication Engineering, Korea Aerospace University)
Nam, Chul (Department of Electronics Engineering, Konkuk University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.48, no.5, 2011 , pp. 34-41 More about this Journal
Abstract
This paper presents a 24 channel capacitive touch sensing ASIC. This ASIC consists of analog circuit part and digital circuit part. Analog circuits convert user screen touch into electrical signal and digital circuits represent this signal change as digital data. Digital circuit also has an I2C interface for operation parameter reconfiguration from host machine. This interface guarantees the stable operation of the ASIC even against wide operation condition change. This chip is implemented with 0.18 um CMOS process. Its area is about 3 $mm^2$ and power consumption is 5.3mW. A number of EDA tools from Cadence and Synopsys are used for chip design.
Keywords
Touch Sensor; Capacitive sensor; ASIC; SoC;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 남철 외, "0.18 um CMOS 공정을 이용한 SoC용 정전 용량형 멀티 채널 터치 센싱 ASIC의 설계," 전자공학회 논문지, 제 47권 SD편, 제4호, 2010년 4월.
2 Sungsik Lee et al, "1.5V Sub-mW CMOS Interface Circuit for Capacitive Sensor Applications in Ubiquitous Sensor Networks," ETRI Journal, Vol. 30, No. 5, Oct. 2008.
3 http://www.altera.com
4 http://www.totalphase.com