%0 Conference Paper
%A Sutri, N.Y.
%A Dennis, J.O.
%A Khir, M.H.Md.
%A Tang, T.B.
%A Mian, M.U.
%D 2014
%F scholars:4915
%I IEEE Computer Society
%K Chopper amplifiers; Circuit simulation; CMOS integrated circuits; Demodulation; MEMS; Modulation; Optical variables measurement; Stabilization, Chopper stabilization; Chopper stabilization techniques; CMOS process technology; Complementary metal oxide semiconductors; Flicker noise; Micro electro mechanical system; Noise contributions; Sensor applications, Choppers (circuits)
%R 10.1109/ICIAS.2014.6869473
%T Low-noise, low-offset modulator demodulator circuit for chopper stabilization technique in CMOS-MEMS sensor applications
%U https://khub.utp.edu.my/scholars/4915/
%X This paper presents a design and technique for low noise, low offset modulation demodulation circuit for chopper stabilized amplifiers use in CMOS-MEMS sensor applications. In these sensors, where the sensed signals are usually very weak, a low-noise interface readout circuit plays a crucial role in determining the overall sensor performance and success in the market. Amplifiers are the core building blocks of these circuits and hence there is a growing demand for low noise and low offset designs and fabrication. Chopper stabilization technique has been widely used in amplifiers for flicker (1/f) noise and offsets reduction purposes using the principles of modulation and demodulation. Thus, the functionality and performance of the modulation and demodulation circuit determines the realization and attainment of chopper stabilization. The demonstrated circuits in this work are designed in MIMOS 0.35 μm AMS CMOS 3.3 V CMOS process technology. Cadence Spectre simulation results show the presented circuit achieves chopper stabilization with total noise contribution of 0.885 nV�Hz and minimized offset. © 2014 IEEE.
%Z cited By 3; Conference of 2014 5th International Conference on Intelligent and Advanced Systems, ICIAS 2014 ; Conference Date: 3 June 2014 Through 5 June 2014; Conference Code:107042