A 14-bit 5MS/s SAR ADC with digital calibration algorithm for OLED display touch system. (September 2022)
- Record Type:
- Journal Article
- Title:
- A 14-bit 5MS/s SAR ADC with digital calibration algorithm for OLED display touch system. (September 2022)
- Main Title:
- A 14-bit 5MS/s SAR ADC with digital calibration algorithm for OLED display touch system
- Authors:
- Wu, Si
Guo, Xiaoyu
Li, Hongge
Xia, Tongsheng - Abstract:
- Abstract: In this article, we propose a 14-bit successive approximation register (SAR) analog-to-digital converter (ADC) based on digital calibration algorithm for large-size organic light-emitting diode (OLED) display touch chip. The SAR ADC uses a digital-to-analog convertor (DAC) segmented into two sub-DACs in each channel. A total of two channels are used in the ADC to realize interleaved sampling. The proposed digital calibration technique improves the spurious free dynamic range (SFDR) over 30 dB and reduces the integrated non-linearity (INL) over ten times with different capacitive DAC mismatches. The peaks of differential non-linearity (DNL) and INL are measured to be 0.520 LSB and 1.027 LSB, respectively. The 14 bit 5 MS/s ADC achieves an ENOB of 12.4, a power consumption of 1.054 mW by 110-nm CMOS process, and leads to a figure of merit (FoM) of 14.08 fJ/conv.-step. Highlights: A novel SAR ADC based on digital calibration algorithm for large-size OLED display touch system is proposed to improve the SFDR over 30 dB. The proposed SAR ADC uses a DAC segmented into two sub-DACs in each column and a total of two channels are used to realize interleaved sampling and self calibration. The proposed digital calibration can be carried out all the time during conversion of ADC to calibrate the weight error and deviation of SAR ADC.
- Is Part Of:
- Microelectronics journal. Volume 127(2022)
- Journal:
- Microelectronics journal
- Issue:
- Volume 127(2022)
- Issue Display:
- Volume 127, Issue 2022 (2022)
- Year:
- 2022
- Volume:
- 127
- Issue:
- 2022
- Issue Sort Value:
- 2022-0127-2022-0000
- Page Start:
- Page End:
- Publication Date:
- 2022-09
- Subjects:
- Analog-to-digital converter (ADC) -- Successive approximation register (SAR) -- Organic light-emitting diode (OLED) -- Digital-to-analog converter (DAC)
Microelectronics -- Periodicals
Microélectronique -- Périodiques
Microelectronics
Electronic journals
Journals - contents and abstracts
Periodicals
621.3805 - Journal URLs:
- http://catalog.hathitrust.org/api/volumes/oclc/5877621.html ↗
http://www.sciencedirect.com/science/journal/00262692 ↗
http://www.intute.ac.uk/sciences/cgi-bin/fullrecord.pl?handle=lesa.1012319367 ↗
http://www.elsevier.com/journals ↗
http://www.elsevier.com/homepage/elecserv.htt ↗ - DOI:
- 10.1016/j.mejo.2022.105522 ↗
- Languages:
- English
- ISSNs:
- 0959-8324
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 5758.973000
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- 23053.xml