PMID- 34451080
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20210831
IS  - 1424-8220 (Electronic)
IS  - 1424-8220 (Linking)
VI  - 21
IP  - 16
DP  - 2021 Aug 21
TI  - Readout Integrated Circuit for Small-Sized and Low-Power Gas Sensor Based on HEMT 
      Device.
LID - 10.3390/s21165637 [doi]
LID - 5637
AB  - This paper presents a small-sized, low-power gas sensor system combining a 
      high-electron-mobility transistor (HEMT) device and readout integrated circuit 
      (ROIC). Using a semiconductor-based HEMT as a gas-sensing device, it is possible 
      to secure high sensitivity, reduced complexity, low power, and small size of the 
      ROIC sensor system. Unlike existing gas sensors comprising only HEMT elements, 
      the proposed sensor system has both an ROIC and a digital controller and can 
      control sensor operation through a simple calibration process with digital signal 
      processing while maintaining constant performance despite variations. The ROIC 
      mainly consists of a transimpedance amplifier (TIA), a negative-voltage 
      generator, and an analog-to-digital converter (ADC) and is designed to match a 
      minimum target detection unit of 1 ppm for hydrogen. The prototype ROIC for the 
      HEMT presented herein was implemented in a 0.18 microm complementary 
      metal-oxide-semiconductor (CMOS) process. The total measured power consumption 
      and detection unit of the proposed ROIC for hydrogen gas were 3.1 mW and 2.6 ppm, 
      respectively.
FAU - Lee, Seungjun
AU  - Lee S
AD  - Department of Electrical and Electronic Engineering, Konkuk University, Seoul 
      05029, Korea.
FAU - Jin, Joohwan
AU  - Jin J
AD  - Department of Electrical and Electronic Engineering, Konkuk University, Seoul 
      05029, Korea.
FAU - Baek, Jihyun
AU  - Baek J
AD  - Department of Electrical and Electronic Engineering, Konkuk University, Seoul 
      05029, Korea.
FAU - Lee, Juyong
AU  - Lee J
AD  - Department of Electrical and Electronic Engineering, Konkuk University, Seoul 
      05029, Korea.
FAU - Chae, Hyungil
AU  - Chae H
AD  - Department of Electrical and Electronic Engineering, Konkuk University, Seoul 
      05029, Korea.
LA  - eng
GR  - 2020R1A2C1099786/National Research Foundation of Korea/
PT  - Journal Article
DEP - 20210821
PL  - Switzerland
TA  - Sensors (Basel)
JT  - Sensors (Basel, Switzerland)
JID - 101204366
SB  - IM
PMC - PMC8402593
OTO - NOTNLM
OT  - HEMT device
OT  - delta-sigma ADC
OT  - gas sensor
OT  - negative charge pump
OT  - readout integrated circuit
OT  - transimpedance amplifier
COIS- The authors declare no conflict of interest.
EDAT- 2021/08/29 06:00
MHDA- 2021/08/29 06:01
PMCR- 2021/08/21
CRDT- 2021/08/28 01:02
PHST- 2021/07/27 00:00 [received]
PHST- 2021/08/12 00:00 [revised]
PHST- 2021/08/19 00:00 [accepted]
PHST- 2021/08/28 01:02 [entrez]
PHST- 2021/08/29 06:00 [pubmed]
PHST- 2021/08/29 06:01 [medline]
PHST- 2021/08/21 00:00 [pmc-release]
AID - s21165637 [pii]
AID - sensors-21-05637 [pii]
AID - 10.3390/s21165637 [doi]
PST - epublish
SO  - Sensors (Basel). 2021 Aug 21;21(16):5637. doi: 10.3390/s21165637.