CMOS-based gas sensor

SoC approach

Faisal Mohd Yasin, K. F. Tye, C. Y. Lee, Md. Mamun Ibne Reaz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The design of CMOS-based SAW gas sensor with a system on chip (SoC) approach is presented in this paper. The SAW sensor devices typically run at RF, requiring most design to have complex signal conditioning circuitry. Our approach attempts to simplify the design while operating at 354MHz. An algorithm has been developed to get the optimized solution for the SAW sensor's design parameters. In the simulations the tungsten trioxide (WO3) film is used as a sensing element to detect hydrogen sulfide (H2S). The signal processing circuitry is designed using TSMC 0.35u technology. It could detect the input which is in the form of frequency ranging from 300MHz to 400MHz. Simulation data show that this design has 30% reduced power and 10 time lesser die size, compare to two existing works. The CMOS SAW gas sensor is designed using the Mentor Graphics design tools based on TSMC 0.35um technology. Figure 1 shows the layout of the entire system. Numerous simulations have been performed to get the optimized design. The results obtained based on different number of IDT finger pairs and overlap length are shown in Figure 2 and 3. Finally, the final output (in voltage) from the signal conditioning circuitry is presented in Figure 4.

Original languageEnglish
Title of host publicationASICON 2005: 2005 6th International Conference on ASIC, Proceedings
Pages632-634
Number of pages3
Volume2
Publication statusPublished - 2005
Externally publishedYes
EventASICON 2005: 2005 6th International Conference on ASIC - Shanghai
Duration: 24 Oct 200527 Oct 2005

Other

OtherASICON 2005: 2005 6th International Conference on ASIC
CityShanghai
Period24/10/0527/10/05

Fingerprint

Chemical sensors
Signal processing
Sensors
Hydrogen sulfide
System-on-chip
Tungsten
Electric potential

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Yasin, F. M., Tye, K. F., Lee, C. Y., & Ibne Reaz, M. M. (2005). CMOS-based gas sensor: SoC approach. In ASICON 2005: 2005 6th International Conference on ASIC, Proceedings (Vol. 2, pp. 632-634). [1611408]

CMOS-based gas sensor : SoC approach. / Yasin, Faisal Mohd; Tye, K. F.; Lee, C. Y.; Ibne Reaz, Md. Mamun.

ASICON 2005: 2005 6th International Conference on ASIC, Proceedings. Vol. 2 2005. p. 632-634 1611408.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yasin, FM, Tye, KF, Lee, CY & Ibne Reaz, MM 2005, CMOS-based gas sensor: SoC approach. in ASICON 2005: 2005 6th International Conference on ASIC, Proceedings. vol. 2, 1611408, pp. 632-634, ASICON 2005: 2005 6th International Conference on ASIC, Shanghai, 24/10/05.
Yasin FM, Tye KF, Lee CY, Ibne Reaz MM. CMOS-based gas sensor: SoC approach. In ASICON 2005: 2005 6th International Conference on ASIC, Proceedings. Vol. 2. 2005. p. 632-634. 1611408
Yasin, Faisal Mohd ; Tye, K. F. ; Lee, C. Y. ; Ibne Reaz, Md. Mamun. / CMOS-based gas sensor : SoC approach. ASICON 2005: 2005 6th International Conference on ASIC, Proceedings. Vol. 2 2005. pp. 632-634
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