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A 99-dB DR Fourth-Order Delta-Sigma Modulator for 20-kHz Bandwidth Sensor Applications

Title
A 99-dB DR Fourth-Order Delta-Sigma Modulator for 20-kHz Bandwidth Sensor Applications
Author
이성준
Keywords
Analog-to-digital converter; delta-sigma modulator; high resolution; signal sensors; switched-capacitor circuit
Issue Date
2009-07
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, v. 58, NO. 7, Page. 2264-2274
Abstract
A fourth-order single-bit delta-sigma modulator is presented for sensor applications. The loop filter is composed of both feedback and feedforward paths, and the modulator is implemented using fully differential switched-capacitor techniques. A test chip was fabricated in a 0.18-mu m standard complementary metal-oxide semiconductor (CMOS) process. The chip core area is 1.22 mm(2), and its power consumption is 5.6 mW from a 3.0-V power supply. Measurement results show that a maximum 99-dB dynamic range is achievable at a clock rate of 3.2 MHz for the 20-kHz bandwidth. The designed chip is targeted for high-accuracy and wide-bandwidth sensor applications such as the resistor-based current sensors and the Hall-effect sensors in motor control systems.
URI
https://ieeexplore.ieee.org/document/4785238https://repository.hanyang.ac.kr/handle/20.500.11754/183175
ISSN
0018-9456;1557-9662
DOI
10.1109/TIM.2009.2013910
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > INTEGRATIVE ENGINEERING(융합공학과) > Articles
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