Power Efficient Design of Zero-Crossing-Based Switched-Capacitor Circuits

Min, Dong-Jick; Kim, Soo Hwan; Shim, Jae Hoon

doi:10.1109/iceic49074.2020.9051001

Search citation statements

Order By: Relevance

Paper Sections

Select...

A Proposed Two-phase Charging Scheme1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2021

Publication Types

Select...

Other1

Relationship

Self Cite1

Independent0

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4(a) [10]), and the unidirectional scheme (Fig. 4(b) [11]). Table I shows the results when the integrators are excited by a 390-kHz sinusoidal input and indicates that the proposed bidirectional scheme exhibits the smallest signal-dependent error.…”

Section: A Proposed Two-phase Charging Schemementioning

confidence: 99%

A Zero-Crossing-Based Integrator with Bidirectional Two-Phase Charging and Selective-Reset Operations for ΔΣ ADCs

Min

Shim

2021

2021 IEEE International Symposium on Circuits and Systems (ISCAS)

Self Cite

View full text Add to dashboard Cite

Zero-crossing-based integrators (ZCBIs) are energyefficient alternatives to conventional switched-capacitor integrators that are typically implemented using operational transconductance amplifiers (OTAs). However, ZCBIs suffer from signaldependent overshoot errors and increased dynamic power consumption due to inherent reset operation. This paper presents a ZCBI that employs a bidirectional two-phase charging scheme and performs the reset operation selectively. A 3rd-order Delta-Sigma modulator has been fabricated in a 28-nm CMOS technology using the proposed integrators. The prototype modulator achieves 67-dB SNR and 63-dB SNDR over the bandwidth of 196 kHz with an oversampling ratio of 64. It consumes 184 µW, which translates to the figure-of-merits of 154 dB (FoMs) and 390 fJ/conv-step (FoMw).

show abstract

Section: A Proposed Two-phase Charging Schemementioning

confidence: 99%