| Paper Abstract and Keywords |
| Presentation |
2018-11-28 16:30
[Poster Presentation]
[Poster Presentation] A Current-Mode Differential Sensing CMOS Imager for Optical Linear Encoder
You-Shin Chen, Tzu-Hsiang Hsu (NTHU), Chien-Wen Chen (ITRI), Chih-Cheng Hsieh (NTHU) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
This paper presents a high speed low noise CMOS imager for optical linear encoder. Dual sensor arrays and the corresponding readout circuit are implemented for incremental and absolute signals, respectively. For incremental signal, current-mode differential sensing (CMDS) frontend with buffered direct injection (BDI) is proposed for DC background cancellation and high response bandwidth. Transimpedance amplifier (TIA) is implemented for current-to-voltage conversion with low-pass filtering function for noise reduction. Programmable amplifier (PGA) is implemented for single-to-differential conversion and full-range fitting for the following 12-bit SAR analog-to-digital converter (ADC). For absolute signal, 42 sensor pixels with the corresponding dual-threshold quantizer and latch are implemented. This work achieves a SNR of 63.4dB, a phase error of 33.8 degree at 3.3MHz incremental input, and an ADC ENOB of 11.08-bit at a sampling rate of 200kHz. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Optical encoder / transimpedance amplifier / position detection / / / / / |
| Reference Info. |
ITE Tech. Rep., vol. 42, no. 40, IST2018-80, pp. 43-44, Nov. 2018. |
| Paper # |
IST2018-80 |
| Date of Issue |
2018-11-21 (IST) |
| ISSN |
Print edition: ISSN 1342-6893 Online edition: ISSN 2424-1970 |
| Download PDF |
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| Conference Information |
| Committee |
IST |
| Conference Date |
2018-11-28 - 2018-11-28 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Tamachi Campus, TITECH |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
4th International Workshop on Image Sensors and Imaging Systems (IWISS2018) |
| Paper Information |
| Registration To |
IST |
| Conference Code |
2018-11-IST |
| Language |
English |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
[Poster Presentation] A Current-Mode Differential Sensing CMOS Imager for Optical Linear Encoder |
| Sub Title (in English) |
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| Keyword(1) |
Optical encoder |
| Keyword(2) |
transimpedance amplifier |
| Keyword(3) |
position detection |
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| 1st Author's Name |
You-Shin Chen |
| 1st Author's Affiliation |
National Tsing Hua University (NTHU) |
| 2nd Author's Name |
Tzu-Hsiang Hsu |
| 2nd Author's Affiliation |
National Tsing Hua University (NTHU) |
| 3rd Author's Name |
Chien-Wen Chen |
| 3rd Author's Affiliation |
Industrial Technology Research Institute (ITRI) |
| 4th Author's Name |
Chih-Cheng Hsieh |
| 4th Author's Affiliation |
National Tsing Hua University (NTHU) |
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| Speaker |
Author-1 |
| Date Time |
2018-11-28 16:30:00 |
| Presentation Time |
90 minutes |
| Registration for |
IST |
| Paper # |
IST2018-80 |
| Volume (vol) |
vol.42 |
| Number (no) |
no.40 |
| Page |
pp.43-44 |
| #Pages |
2 |
| Date of Issue |
2018-11-21 (IST) |