continuous-time delta–sigma modulator (CT DSM)

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A Continuous-Time Incremental Zoom ADC With Extended Quantization, Easy-to-Drive Capacitive Input and Deadband-Embedded Gm-C Loop Filter

A Continuous-Time Incremental Zoom ADC With Extended Quantization, Easy-to-Drive Capacitive Input and Deadband-Embedded Gm-C Loop Filter 150 150
Author(s): Chaoyang Xing, Yilu Cui, Yi Zhong, Nan Sun, Lu Jie

Abstract:

This article presents a continuous-time (CT) analog-to-digital converter (ADC) featuring an incremental zoom with extended quantization architecture. The proposed MASH topology comprises an 8-bit oversampled successive-approximation register (SAR) ADC as the first stage, a 1-bit incremental CT delta-sigma modulator (CT-DSM) as the second stage, and a 12-bit Nyquist SAR ADC …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 13
Year of Publication: 2026
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2026.3717666
Publisher: IEEE

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A 136.6-dB-DR 174.3-dB-FoMS Versatile Current-to-Digital Converter With a Truncated-Noise-Shaped Baseline-Servo-Loop

A 136.6-dB-DR 174.3-dB-FoMS Versatile Current-to-Digital Converter With a Truncated-Noise-Shaped Baseline-Servo-Loop 150 150
Author(s): Taeryoung Seol, Sehwan Lee, Geunha Kim, Samhwan Kim, Yeonjae Shin, Jeongyoon Wie, Seungyeob Baik, Hongki Kang, Minyoung Song, Jong-Hyeok Yoon, Junghyup Lee

Abstract:

This article presents a high-resolution, wide dynamic-range (DR) current-to-digital converter (IDC) capable of directly digitizing a broad range of bio-current signals. To achieve high resolution, the IDC uses a second-order continuous-time delta–sigma modulator (CT-DSM) architecture with a low-noise current-recycling operational amplifier (op-amp) and a highly linear pseudo-differential voltage-controlled oscillator (…

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 13
Year of Publication: 2026
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2026.3653442
Publisher: IEEE

View on IEEE Xplore

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