A new readout/driver circuitry for an optical vibration sensor

Chun Hao Wu, Paul C.-P. Chao*, Yi Cheng Wu, Thilo Sauter, Hsiao-Wen Zan

*此作品的通信作者

研究成果: Conference contribution同行評審

1 引文 斯高帕斯(Scopus)

摘要

This work presents research results on designing the drive and readout circuits for a newly-developed optical vibrations sensor. Tes sensor consists of organic light-emitting diodes (OLEDs) and photodetectors (OPDs) and micro-structure to realize the function of vibration sensing. Proper operations of OLEDs and OPDS needs a driver and a readout circuit, respectively. A driver circuit is designed for driving and controlling OLED light; also, a readout circuit is designed to acquire current signal from OPD and then converts it to digital signals by an analog-to-digital converter (ADC). In addition to readout circuit, a front-end amplifier called transimpedance amplifier (TIA) is designed for converting the output current of the OPDs. The TIA is followed by an IA and LPF for better signal quality before a SAR ADC designed for converting the vibration amplitude to digits. The resolution of 10-bit ADC sub-circuit is 1.95mV/LSB. It is suitable for OPD current output. Moreover, a pulse width modulation (PWM) driver circuit which is designed with frequency output 200 KHz is suitable for driving OLED. The proposed circuit is fabricated by TSMC 0.35-μm CMOS process where the area is 4.5 mm2 for the whole chip while power consumption is 7.808 mW.

原文English
主出版物標題IEEE SENSORS 2017 - Conference Proceedings
發行者Institute of Electrical and Electronics Engineers Inc.
頁面1-3
頁數3
ISBN(電子)9781509010127
DOIs
出版狀態Published - 29 10月 2017
事件16th IEEE SENSORS Conference, ICSENS 2017 - Glasgow, United Kingdom
持續時間: 30 10月 20171 11月 2017

出版系列

名字Proceedings of IEEE Sensors
2017-December
ISSN(列印)1930-0395
ISSN(電子)2168-9229

Conference

Conference16th IEEE SENSORS Conference, ICSENS 2017
國家/地區United Kingdom
城市Glasgow
期間30/10/171/11/17

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