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First Order Mobility Independent ASIC for a Point-of-Care In-Vitro Diagnostic Device

Ramasamy, Lakshminarayanan

Abstract Details

2012, PhD, University of Cincinnati, Engineering and Applied Science: Electrical Engineering.
A successful approach is made to design an ASIC with mobility independent circuit characteristics. This design method can be implemented in Point-of-Care In-vitro diagnostic devices. To achieve this, a class of analog integrated circuits (analog computation circuits) was designed using the linear transconductance and transresistance principle. The ASIC was successfully implemented in ABN-AMI 1.5µm technology. A detailed transient, DC, frequency and temperature analysis on the ASIC was performed. The current design exhibits first order mobility independent circuit characteristics. That is, the circuit designed for one technology can be implemented in any other technology without any design changes. Therefore, a scalable CMOS analog circuit design is realized. Scalability is an important property that is an essential requirement for a system-on-a-chip development. The ASIC chip was successfully simulated in other technologies such as IBM 0.5 µm, IBM 0.35 µm, TSMC 0.18 µm. The measured results of the adder and the subtractor depict process, temperature and mobility independent circuit characteristics. The measured results of the four-quadrant analog multiplier (FQAM) circuit and the four-quadrant analog divider (FQAD) circuit exhibit first order mobility independent circuit function. However, the FQAM and FQAD circuits have threshold dependent circuit function and hence, they exhibit a temperature dependent circuit function. The measured temperature coefficient (input offset voltage) of the inverting amplifier (IA), squarer, amplifier (at gain = 10), adder, subtractor, FQAM, and FQAD are -0.069, -0.23, 0.66, -0.03, -0.08, -0.45 and 1.4 mV/°C respectively.
Joseph Nevin, PhD (Committee Chair)
Chong Ahn, PhD (Committee Member)
Gregory Beaucage, PhD (Committee Member)
Harold Carter, PhD (Committee Member)
Kenneth Roenker, PhD (Committee Member)
118 p.

Recommended Citations

Citations

  • Ramasamy, L. (2012). First Order Mobility Independent ASIC for a Point-of-Care In-Vitro Diagnostic Device [Doctoral dissertation, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1326296847

    APA Style (7th edition)

  • Ramasamy, Lakshminarayanan. First Order Mobility Independent ASIC for a Point-of-Care In-Vitro Diagnostic Device. 2012. University of Cincinnati, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1326296847.

    MLA Style (8th edition)

  • Ramasamy, Lakshminarayanan. "First Order Mobility Independent ASIC for a Point-of-Care In-Vitro Diagnostic Device." Doctoral dissertation, University of Cincinnati, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1326296847

    Chicago Manual of Style (17th edition)