TY - GEN
T1 - Evaluation of low-voltage CMOS differential amplifier for smartphone sensing
AU - Kawamura, Kyohei
AU - Matsumoto, Yoshinori
PY - 2012/12/1
Y1 - 2012/12/1
N2 - The purpose of this study is to design a low voltage differential amplifier circuit driven by the audio interface to realize the sensing device without external power supply. The pseudo-differential amplifier was designed using a inverter-based subtracting circuit with 0.18μm standard CMOS process. The maximum differential gain was measured as 51.4dB at 1V supply voltage, and the CMRR was 45.1dB. The input offset temperature drift is 1.5μV/ 'C. In addition, the simulation was carried out for the sensing circuit in the smartphone configuration.
AB - The purpose of this study is to design a low voltage differential amplifier circuit driven by the audio interface to realize the sensing device without external power supply. The pseudo-differential amplifier was designed using a inverter-based subtracting circuit with 0.18μm standard CMOS process. The maximum differential gain was measured as 51.4dB at 1V supply voltage, and the CMRR was 45.1dB. The input offset temperature drift is 1.5μV/ 'C. In addition, the simulation was carried out for the sensing circuit in the smartphone configuration.
UR - http://www.scopus.com/inward/record.url?scp=84873952267&partnerID=8YFLogxK
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U2 - 10.1109/ICSENS.2012.6411458
DO - 10.1109/ICSENS.2012.6411458
M3 - Conference contribution
AN - SCOPUS:84873952267
SN - 9781457717659
T3 - Proceedings of IEEE Sensors
BT - IEEE SENSORS 2012 - Proceedings
T2 - 11th IEEE SENSORS 2012 Conference
Y2 - 28 October 2012 through 31 October 2012
ER -