Low Noise-Low Power Transimpedance Amplifier Design for Electric Field Sensing

Lemonou, Aikaterini; Agorastou, Zoi; Noulis, Thomas; Siskos, S.

doi:10.1109/pacet56979.2022.9976379

Cited by 1 publication

(2 citation statements)

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“…The input differential pair transistors, as well as the transistors that compose the summing circuit of the amplifier, are the main noise contributors of the amplifier design. Since the flicker noise is inversely proportional to the WL area of the transistor device, the W and L dimensions of these transistors were increased to decrease the flicker noise [15,16]. Table 20 includes the voltage and current noise of the op-amp that was employed for the preamplifier design.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Since the frequency of the desired signal is limited by the sensor design to be at the frequency range where flicker noise is the dominant source of noise, the preamplification stage should be designed to have minimum noise contribution and, more specifically, minimum flicker noise contribution. This was the object of study of a previous work [11], and an improved amplifier design more suitable for the application, which adopted the low-noise and low-power design techniques utilized in [15,16], was used in this work (see Section 4).…”

Section: Electric Field Mill Sensor Interface and Specificationsmentioning

confidence: 99%

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Integrated Filter Design for Analog Field Mill Sensor Interface

Agorastou

Michailidis

Lemonou

et al. 2023

Sensors

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The design process of an integrated bandpass filter targeted for the noise filtering stage of the synchronous demodulation unit of an electric field mill sensor interface is presented. The purpose of this study of filter integration techniques is to avoid the challenging and, in some cases, impossible passive element integration process and to incorporate the final filter design in an entirely integrated field mill sensing system with superior performance and an optimized silicon-to-cost ratio. Four different CMOS filter implementations in the 0.18 μm process of XFAB, using OTA (Operational Transconductance Amplifier)-based configurations for passive element replacement in cascaded filter topologies and leapfrog techniques, are compared in terms of noise performance, total harmonic distortion, dynamic range, and power consumption, as well as in terms of integrability, silicon area, and performance degradation at process corners/mismatches. The optimum filter design performance-wise and process-wise is included in the final design of the integrated analog readout of a field mill sensor, and post-layout simulation results of the total circuit are presented.

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Section: Simulation Resultsmentioning

confidence: 99%