@inproceedings{7f1d78a2dcd5436a8e4aeb397c9fc53b,
title = "A 191 mV/pH sensitivity and 2219 fps frame rate CMOS ion image sensor",
abstract = "This paper presents a high sensitivity and high frame rate hydrogen ion image sensor in standard CMOS process for high accuracy and high throughput hydrogen ion monitoring. A novel ion-to-current-to-voltage sensing front-end using 2-transistor (2T) and a column capacitive transimpedance instrumentation amplifier (CTIA) enable high pixel density, high sensitivity and rapid response time. A column successive approximate register (SAR)-Single Slope (SS) dual-mode analog-to-digital converter (ADC) is employed as it outperforms SS ADC on quantization speed and power efficiency while occupies less chip area to be able to fit in a pixel column compared with SAR ADC. Due to the novel sensing front-end and dual-mode ADC employed, the proposed CMOS ion image sensor system achieves a simulated 191mV/pH sensitivity and 2219 fps frame rate.",
keywords = "CMOS ion image sensor, High frame rate, High sensitivity, SAR-Single Slope dual-mode ADC",
author = "Mingzheng Duan and Xiaopeng Zhong and Jiaqi Chen and Feng Gao and Lee, {Yi Kuen} and Amine Bermak",
note = "Publisher Copyright: {\textcopyright} 2020 IEEE; 52nd IEEE International Symposium on Circuits and Systems, ISCAS 2020 ; Conference date: 10-10-2020 Through 21-10-2020",
year = "2020",
language = "English",
series = "Proceedings - IEEE International Symposium on Circuits and Systems",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2020 IEEE International Symposium on Circuits and Systems, ISCAS 2020 - Proceedings",
address = "United States",
}