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This paper presents the frontend part of the readout interface for a capacitive MEMS microphone designed and fabricated in 0.35 μm CMOS technology. The developed readout interface will be used in a noise dosimeter applicable in very noisy and harsh environment. The prototype chips were measured and the main parameters evaluated. The achieved results demonstrate low harmonic distortion, low noise and...
In this paper, a fully differential difference amplifier designed in 0.35 µm CMOS technology is presented. The proposed amplifier reaches high dynamic range and low input noise. Comparison of noise performance of the proposed fully differential difference amplifier to an ordinary differential amplifier has been performed. Simulation results prove that the developed amplifier circuit can be advantageously...
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