Abstract
Preamplifier is the initial block of Analog Front End (AFE) design that resolves the performance of the implantable Neurons activity processing System. The key design parameters of neural recording systems are gain, low power and noise. This requirement demands analog design engineers to design to integrate large number of front end amplifiers on a single on-chip. This work focuses on design of low noise pre-amplifier to meet the requirements and demands for IoT based neural recording system. We proposed a single stage Telescopic OTA with improved current mirror structure to minimize noise contribution of load circuitry Device current and geometry are normalized to Inversion Coefficient (IC). The simulations are carried out with 180 nm Technology in Cadence environment for noise, gain and Voltage-Temperature (V-T) variations with \(V_{DD}\) of 1.5 V. Results show an improvement of 78 dB in gain, 320 nV/sqrt(Hz) of input referred noise, 1.2 \(\upmu \)W power consumption and less impact of PVT variations on the overall performance of amplifier without degradation in stability.
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Vikram C, Bhardwaja M (2011) A low noise low power adaptive neural amplifier in 0.13um CMOS Technology. IEEE J. Emerg. Sel. Top. Circuits Syst. 1(4):536–545
Liu L, Zou X, Goh WL, Ramamoorthy R, Dawe G, Je M (2012) 800nw 43nV/Hz neural recording amplifier with enhanced noise efficiency factor. Electron. Lett. 48(9):479–480
Johns D, Martin K (2007) Analog integrated circuit design, 2nd edn. Wiley, New York
Enz CC, Krummenacher F, Vinoz EA (1995) An analytical MOS transistor model valid in all region of operation and dedicated to low voltage and low current applications. Analog Integr. Circ. Sig. Process 8:83–114
Binkley D (2008) Trade-offs and optimization in analog CMOS design, 1st edn. Wiley, Charlotte
Wilfred RT, Roth ZS (2013) Determination and study of MOSFET technology current. Can. J. Electr. Electron. Eng. 4(2):75–82
Sansen W (2015) Minimum power in analog amplifying blocks: presenting a design procedure. IEEE Solid State Circuits Mag. 7(4):83–89
Daniel F, Bucher M, Binkley D (2002) Re-interpreting the MOS transistor via the inversion coefficient and the continuum of gm/Id. In: 9th international conference on electronics, circuits and systems, vol 3, pp 1179–1182
Cheengliang QO, Sinencio ES (2011) A micro power low noise Neural recording Front-end circuit for epileptic seizure Detection. IEEE J. Solid State Circuits 6(6)
Tsividis Y (1998) Operation and modeling of the MOS transistor, 2nd edn. McGraw-Hill, Boston
Mohd Ansari Y, Samar M (2018) Ultra-low voltage analog IC design: challenges, methods and examples. Radio Eng. 27(1):171–185
Enz CC (2008) A short story of the EKV MOS transistor model. IEEE Solid State Circuits Soc. Newsl. 13(3):24–30
Akbari M, Hashemipour O (2015) Design and analysis of folded cascode OTAs using Gm/Id methodology based on flicker noise reduction. Analog Integr. Circ. Sig. Process. 83:343–352
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The authors would like to acknowledge the support of Management of CVRCE and VLSI laboratory, CVRCE, Hyderabad, INDIA.
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Saidulu, B., Sahoo, S.K., Manukrishna, V.R. (2020). Design and Study of Amplifier with Variations in Supply and Temperature. In: Nayak, J., Balas, V., Favorskaya, M., Choudhury, B., Rao, S., Naik, B. (eds) Applications of Robotics in Industry Using Advanced Mechanisms. ARIAM 2019. Learning and Analytics in Intelligent Systems, vol 5. Springer, Cham. https://doi.org/10.1007/978-3-030-30271-9_11
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DOI: https://doi.org/10.1007/978-3-030-30271-9_11
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