A Different View of Sigma-Delta Modulators Under the Lens of Pulse Frequency Modulation [Feature]

Medina, Victor; Rombouts, Pieter; Hernandez-Corporales, Luis

doi:10.1109/mcas.2024.3352552

IEEE Circuits Syst. Mag.

2024

DOI: 10.1109/mcas.2024.3352552

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A Different View of Sigma-Delta Modulators Under the Lens of Pulse Frequency Modulation [Feature]

Victor Medina,

Pieter Rombouts,

Luis Hernandez-Corporales

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Cited by 1 publication

References 27 publications

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A Second-Order True-VCO ADC Employing a Digital Pseudo-DCO Suitable for Sensor Arrays

Loi,

Medina,

Corporales

2024

Sensors

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This paper explores the implementation of a VCO-based ADC, achieving an ENOB of 12 bits with 1 MHz of a sampling rate in the audio bandwidth. The solution exploits the scalability and PVT invariance of a novel digital-to-frequency converter to reduce the size and consumed power. The architecture has been validated in a 130 nm CMOS technology node displaying a power consumption of 105.57 μW and a silicon footprint of 0.034 mm2 in a pseudo-differential configuration. Performance can be dynamically adjusted to trade off power consumption by resolution without changing the sampling rate. In addition, the proposed architecture benefits from multiple instantiations in the same SoC, making it particularly suitable for sensor array applications, such as biomedical sensors and spatial audio arrays.

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A Second-Order True-VCO ADC Employing a Digital Pseudo-DCO Suitable for Sensor Arrays

Loi,

Medina,

Corporales

2024

Sensors

View full text Add to dashboard Cite

show abstract

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A Different View of Sigma-Delta Modulators Under the Lens of Pulse Frequency Modulation [Feature]

Cited by 1 publication

References 27 publications

A Second-Order True-VCO ADC Employing a Digital Pseudo-DCO Suitable for Sensor Arrays

A Second-Order True-VCO ADC Employing a Digital Pseudo-DCO Suitable for Sensor Arrays

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