TY - JOUR
T1 - A fully integrated high-sensitivity wide dynamic range PPG sensor with an integrated photodiode and an automatic dimming control LED driver
AU - Atef, Mohamed
AU - Wang, Min
AU - Wang, Guoxing
N1 - Funding Information:
Manuscript received October 16, 2017; accepted November 14, 2017. Date of publication November 24, 2017; date of current version December 21, 2017. This work was supported by the Natural Science Foundation of China under Grant 61474074. The associate editor coordinating the review of this paper and approving it for publication was Dr. Zhichao Tan. (Corresponding author: Mohamed Atef.) M. Atef is with the School of Microelectronics, Shanghai Jiao Tong University, Shanghai 200240, China, and also with the Electrical Engineering Department, Assiut University, Assiut 71515, Egypt (e-mail: moh_atef@sjtu.edu.cn).
Publisher Copyright:
© 2017 IEEE.
PY - 2018
Y1 - 2018
N2 - This paper presents the design and implementation for a photoplethysmographic (PPG) sensor with an integrated photodiode and an automatic dimming control LED driver. The PPG front end is designed with a programmable low-pass cutoff frequency from 5 Hz up to 35 Hz, a high-pass cutoff frequency of 0.1 Hz, a total input referred noise current of 79 pA, and a maximum transimpedance gain of 144 dBΩ. The sensor fabricated in 0.35-μm CMOS technology and consumes 1.4 mA from 2.7 V-4 V single power supply. The integrated LED driver uses a duty cycle control at a pulse repetition frequency of 200 Hz and 1% duty cycle. The LED driver can supply four LEDs each with 10 mA. An automatic dimming control is implemented to reduce the LEDs current at strong PPG signal strength, to reduce the LEDs power consumption.
AB - This paper presents the design and implementation for a photoplethysmographic (PPG) sensor with an integrated photodiode and an automatic dimming control LED driver. The PPG front end is designed with a programmable low-pass cutoff frequency from 5 Hz up to 35 Hz, a high-pass cutoff frequency of 0.1 Hz, a total input referred noise current of 79 pA, and a maximum transimpedance gain of 144 dBΩ. The sensor fabricated in 0.35-μm CMOS technology and consumes 1.4 mA from 2.7 V-4 V single power supply. The integrated LED driver uses a duty cycle control at a pulse repetition frequency of 200 Hz and 1% duty cycle. The LED driver can supply four LEDs each with 10 mA. An automatic dimming control is implemented to reduce the LEDs current at strong PPG signal strength, to reduce the LEDs power consumption.
KW - Biomedical electronics
KW - Driver circuits
KW - Integrated optoelectronics
KW - Photodiodes
KW - Photoplethysmography
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U2 - 10.1109/JSEN.2017.2777740
DO - 10.1109/JSEN.2017.2777740
M3 - Article
AN - SCOPUS:85044482740
SN - 1530-437X
VL - 18
SP - 652
EP - 659
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
IS - 2
ER -