A 99-dB DR Fourth-Order Delta-Sigma Modulator for 20-kHz Bandwidth Sensor Applications
- Authors
- Choi, Youngkil; Roh, Jeongjin; Roh, Hyungdong; Nam, Hyunseok; Lee, Songjun
- Issue Date
- Jul-2009
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Analog-to-digital converter; delta-sigma modulator; high resolution; signal sensors; switched-capacitor circuit
- Citation
- IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, v.58, no.7, pp.2264 - 2274
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
- Volume
- 58
- Number
- 7
- Start Page
- 2264
- End Page
- 2274
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/41067
- DOI
- 10.1109/TIM.2009.2013910
- ISSN
- 0018-9456
- 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.
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Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF INTEGRATIVE ENGINEERING > 1. Journal Articles
- COLLEGE OF ENGINEERING SCIENCES > SCHOOL OF ELECTRICAL ENGINEERING > 1. Journal Articles
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