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A Capacitor-Free CMOS Low-Noise, Low-Dropout Regulator for Capacitive Micro-Machined Accelerometer Application

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Abstract:

A capacitor-free CMOS low-noise, low-dropout (LDO) regulator for Micro-accelerometer is presented. Noise performance of the regulator is studied from a theoretical point of view and a chopper stabilized error amplifier is designed to minimize output noise. By adopting pole-zero frequency compensation technique, the proposed LDO regulator, which is independent of an off-chip capacitor, provides high closed-loop stability when the load current is switched by micro-accelerometer. The proposed LDO is designed and fabricated on a 2μm CMOS process. From the simulation results, it shows that the line regulation is 3.5mV/V and the load regulation is 0.33mV/mA when the load current changes from 0 to 30 mA. The experimental results show that the output noise of the regulator is less than 180nV/sqrt(Hz) at low frequency

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Periodical:

Key Engineering Materials (Volume 483)

Pages:

97-102

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.483.97

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Online since:

June 2011

Authors:

Bing Jun Lv, Peng Fei Wang, Xiao Wei Liu, Liang Yin, Na Xu

Keywords:

Chopper Stabilization, Frequency Compensation, Low-Dropout Regulator, Micro-Accelerometer, Pole-Zero Tracking Frequency Compensation

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] Haluk Kulah: Closed-loop Electromechanical Sigma-Delta Microgravity accelerometers, dissertation for the degree of doctor of philosophy, The University of Michigan( 2003).

Google Scholar

[2] A. Bakker, J. H. Huijsing: A CMOS chopper opamp with integrated low-pass filter, Proc. ESSCIRC'97(1997), pp.200-203.

Google Scholar

[3] C. Enz, E. Vittoz, F. Krummenacher: A CMOS chopper amplifier, IEEE J Solid-State Vol. 22 Circuits(1987), pp.335-342.

DOI: 10.1109/jssc.1987.1052730

Google Scholar

[4] Chia-Min Chen, Chung-Chih Hung: A Capacitor-Free CMOS Low-Dropout Voltage Regulator (2009), pp.2525-2528.

Google Scholar

[5] Allen P E, Holberg R: CMOS Analog Circuit Design[M]. 2nd ed. BeiJing Publishing House of Electronics Industry(2003).

Google Scholar

[6] S. K. Hoon, S. Chen, F. Maloberti, J. Chen, B. Aravind: A low noise, high power supply rejection low dropout regulator for wireless system-on-chip applications. In Proc. IEEE Custom Integr. Circuits Conf(2005), pp.754-757.

DOI: 10.1109/cicc.2005.1568779

Google Scholar