Title

A PVT-Robust VCO-Based ADC for Bio-Potential Monitoring Systems

Alternative Title

바이오 측정 시스템을 위한 프로세스, 전압, 온도 변화에 강인한 전압제어발진기 기반 아날로그 디지털 컨버터

DGIST Authors

Soyeong Bae ; Junghyup Lee ; Jonghyeok Yoon

Advisor

이정협

Co-Advisor(s)

Jonghyeok Yoon

Issued Date

2023

Awarded Date

2023-02-01

Citation

Soyeong Bae. (2023). A PVT-Robust VCO-Based ADC for Bio-Potential Monitoring Systems. doi: 10.22677/THESIS.200000654607

Type

Thesis

Description

VCO-Based VCO, Calibration, Dynamic range, PVT-Robust, Noise shaping

Table Of Contents

Ⅰ. Introduction 1
1.1 Preview Proposed ADC 2
1.2 Thesis Outline 3
Ⅱ. VCO-Based ADC 3
2.1 Advantage and disadvantage of the VCO 4
2.2 Counter based quantizer 4
2.3 XOR-based quantizer 6
2.4 Limitation of VCO-based ADC 8
2.4.1 Sensitivity of VCO frequency 9
2.4.2 Nonlinearity of VCO Tuning curve 9
Ⅲ. Proposed Open Loop VCO-based ADC with Center frequency Calibration technique 12
3.1 Calibration Loop 12
3.1.1 Operation of Calibration 12
3.1.2 Binary Searching Algorithm 15
3.1.3 Error 17
3.2 Body-driven VCO Design 18
3.3 Dynamic Range 18
3.4 Input Impedance 19
Ⅳ. Measurement results 21
Ⅴ. Conclusion 29
References 30

URI

http://hdl.handle.net/20.500.11750/45755
http://dgist.dcollection.net/common/orgView/200000654607

DOI

10.22677/THESIS.200000654607

Degree

Master

Department

Department of Electrical Engineering and Computer Science

Publisher

DGIST

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