A 0.9-V 60-mu W 1-bit fourth-order delta-sigma modulator with 83-dB dynamic range

Title
A 0.9-V 60-mu W 1-bit fourth-order delta-sigma modulator with 83-dB dynamic range
Author
노정진
Keywords
low power; low voltage; operational transconductance amplifier; sigma-delta modulation; switched capacitator circuits; AUDIO ADC; CMOS; CIRCUITS; LEAKAGE; SWITCH
Issue Date
2008-02
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE JOURNAL OF SOLID-STATE CIRCUITS, v. 43, No. 2, Page. 361-370
Abstract
A 0.9-V 60-mu W delta-sigma modulator is designed using standard CMOS 0.13-mu m technology. The modulator achieves 83-dB dynamic range in a signal bandwidth of 20 kHz with a sampling frequency of 2 MHz. The input-feedforward architecture is used to reduce the voltage swing of the integrators, which enables low-power amplifiers. By considering the characteristics of the modulator architecture, low-quiescent operational transconductance amplifiers are designed, which use positive feedback to increase dc gain. The designed modulator shows very high figure of merit among the state-of-the-art sub-I-V modulators.
URI
https://ieeexplore.ieee.org/document/4444579http://repository.hanyang.ac.kr/handle/20.500.11754/76856
ISSN
0018-9200
DOI
10.1109/JSSC.2007.914266
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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