A 1.8V 204.8-$\mu \mathrm{W}$ 12-Bit Fourth Order Active Passive $\Sigma\Delta$ Modulator for Biomedical Applications

Sohel, Mohammed Arifuddin; Khadir, Aayesha al; Naaz, Maliha; Najeeb, Amena

doi:10.1109/devic.2019.8783626

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…Equation (17) shows that the center frequency f C of the modulator will decrease for a higher delay of the comparator, which degenerates the input bandwidth and linearity of the modulator [20].…”

Section: Asynchronous Delta-sigma Modulatormentioning

confidence: 99%

“…A comparison between DTDSM, CTDSM, and ADSM is shown in Table 1. In several publications, DTDSMs are used for biomedical signal processing [1,16,17]. There also exists solutions utilizing ADSM [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…In several publications, DTDSMs are used for biomedical signal processing [ 1 , 16 , 17 ]. There also exists solutions utilizing ADSM [ 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

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A 1 V 92 dB SNDR 10 kHz Bandwidth Second-Order Asynchronous Delta-Sigma Modulator for Biomedical Signal Processing

Kledrowetz

Fujcik

Prokop

et al. 2020

Sensors

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In this paper, a second-order asynchronous delta-sigma modulator (ADSM) is proposed based on the active-RCintegrators. The ADSM is implemented in the 0.18 μ m CMOS Logic or Mixed-Signal/RF, General Purpose process from the Taiwan Semiconductor Manufacturing Company with a center frequency of 848 kHz at a supply voltage of 1 V with a 92 dB peak signal-to-noise and distortion ratio ( S N D R ), which corresponds to 15 bit resolution. These parameters were achieved in all the endogenous bioelectric signals bandwidth of 10 kHz. The ADSM dissipated 295 μ W and had an area of 0.54 mm 2 . The proposed ADSM with a high resolution, wide bandwidth, and rail-to-rail input voltage range provides the universal solution for endogenous bioelectric signal processing.

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Section: Asynchronous Delta-sigma Modulatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A 1 V 92 dB SNDR 10 kHz Bandwidth Second-Order Asynchronous Delta-Sigma Modulator for Biomedical Signal Processing

Kledrowetz

Fujcik

Prokop

et al. 2020

Sensors

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An ultra-low power hybrid 2nd order feed forward ΔΣ modulator design for implantable medical devices

Laouej

Daoud

Loulou

2021

Analog Integr Circ Sig Process

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A 1.2v ΔΣ ADC Modulator Using 4-bit SAR Quantizer for Biomedical Applications by using 65nm CMOS Technology

Lakshmi Bhavani,

Muzafar,

Usha Rani

et al. 2024

MATEC Web Conf.

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This research focuses on enhancing Sigma-Delta ADC modulators for biomedical applications by leveraging the working principle of Successive Approximation ADC circuits. The proposed modulator includes a comparator, DAC, successive approximation register, and control circuit. The operational process begins with the sample and holds circuit-initiating conversions by sampling the input signal, and then compared with the DAC output. Using a 4-bit example, the successive approximation register refines the DAC output through iterative bit adjustments until the closest digital code approximation to the input is voltage independent of input voltage, occurring incrementally one bit at a time. The proposed enhancement aims to optimize Sigma-Delta ADC modulator performance for biomedical applications, ensuring high resolution and speed. Typical conversion speeds range from 2 to 5 MSPS, with resolutions varying from 8 to 16 bits, contributing to improved precision and efficiency in capturing and digitizing biomedical signals.

show abstract

A 1.8V 204.8-$\mu \mathrm{W}$ 12-Bit Fourth Order Active Passive $\Sigma\Delta$ Modulator for Biomedical Applications

Cited by 3 publications

References 11 publications

A 1 V 92 dB SNDR 10 kHz Bandwidth Second-Order Asynchronous Delta-Sigma Modulator for Biomedical Signal Processing

A 1 V 92 dB SNDR 10 kHz Bandwidth Second-Order Asynchronous Delta-Sigma Modulator for Biomedical Signal Processing

An ultra-low power hybrid 2nd order feed forward ΔΣ modulator design for implantable medical devices

A 1.2v ΔΣ ADC Modulator Using 4-bit SAR Quantizer for Biomedical Applications by using 65nm CMOS Technology

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