A 100- to- 10-kHz 5.4- to- 216- μW Power-Efficient Readout Circuit Employing Closed-Loop Dynamic Amplifier for MEMS Capacitive Accelerometer

Zhong, Longjie; Liu, Shubin; Shang, Pengpeng; Cao, Wenfei; Zhu, Zhangming

doi:10.1109/jssc.2023.3253692

Cited by 4 publications

(2 citation statements)

References 48 publications

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“…As shown in Figure 4, the trans-impedance amplifier must have a feedback loop with a resistor and an amplifier [10] . The amplifier has an infinite input resistance to make the structure function.…”

Section: Circuit Designmentioning

confidence: 99%

A wideband readout charge amplifier for superconducting nanowire single photon detector

Wang,

2024

J. Phys.: Conf. Ser.

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This paper represents a 2.5 GHz gain-bandwidth product readout amplifier. It employs three folded cascode core units and negative feedback paths. The feedback path includes capacitors and resistors. It can reduce input resistance and isolate the parasitic photodiode capacitance. To reduce the capacitance of the long wire, it is integrated with a superconducting nanowire single photon detector and amplifies signals in a cryogenic working environment. After the measurement of this integrated circuit, it can convert a 1 GHz 1 uA sinusoid signal into a 10 mV voltage signal under a cryogenic condition. The total chip is fabricated in a 180 nm SMIC under a supply voltage of 1.2 V with a power consumption of 60 mW. Its gain is 2.976 uV/e.

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Section: Circuit Designmentioning

confidence: 99%

A wideband readout charge amplifier for superconducting nanowire single photon detector

Wang,

2024

J. Phys.: Conf. Ser.

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“…AFE is essential in WMDs for signal amplification and for identifying human abnormalities. Each electrode in a conventional AFE must have its own amplifier, filter, and ADC converter, which creates a variety of design challenges, such as the large active area of resistors, complexity, scalability, and power consumption [35][36][37]. The MUX-based AFE is suggested in this study as a solution to these problems.…”

Section: Introductionmentioning

confidence: 99%

A 0.8 V, 14.76 nVrms, Multiplexer-Based AFE for Wearable Devices Using 45 nm CMOS Techniques

Tamilarasan,

Duraisamy,

Elangovan

et al. 2023

Micromachines

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Wearable medical devices (WMDs) that continuously monitor health conditions enable people to stay healthy in everyday situations. A wristband is a monitoring format that can measure bioelectric signals. The main part of a wearable device is its analog front end (AFE). Wearables have issues such as low reliability, high power consumption, and large size. A conventional AFE device uses more analog-to-digital converters, amplifiers, and filters for individual electrodes. Our proposed MUX-based AFE design requires fewer components than a conventional AFE device, reducing power consumption and area. It includes a single-ended differential feedback operational transconductance amplifier (OTA) and n-pass MUX-based AFE circuits which are related to the emergence of low power, low area, and low cost AFE-integrated chips that are required for wearable biomedical applications. The proposed 6T n-pass multiplexer measures a gain of −68 dB across a frequency range of 100 kHz with a 136.5 nW power consumption and a delay of 0.07 ns. The design layout area is approximately 9.8 µm2 and uses 45 nm complementary metal oxide semiconductor (CMOS) technology. Additionally, the proposed single-ended differential OTA has an obtained input referred noise of 0.014 µVrms, and a gain of −5.5 dB, while the design layout area is about 2 µm2 and was designed with the help of the Cadence Virtuoso layout design tool.

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A low-noise class AB amplifier fabricated by 180 nm BCD process for servo circuit of quartz flexible accelerometer

Li,

Luo,

Wei

2024

Microelectronics Journal

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A 100- to- 10-kHz 5.4- to- 216- μW Power-Efficient Readout Circuit Employing Closed-Loop Dynamic Amplifier for MEMS Capacitive Accelerometer

Cited by 4 publications

References 48 publications

A wideband readout charge amplifier for superconducting nanowire single photon detector

A wideband readout charge amplifier for superconducting nanowire single photon detector

A 0.8 V, 14.76 nVrms, Multiplexer-Based AFE for Wearable Devices Using 45 nm CMOS Techniques

A low-noise class AB amplifier fabricated by 180 nm BCD process for servo circuit of quartz flexible accelerometer

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