A 0.9-V 60- μW 1-Bit Fourth-Order Delta-Sigma Modulator With 83-dB Dynamic Range

A 0.9-V 60-muW delta-sigma modulator is designed using standard CMOS 0.13-mum 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 en...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of solid-state circuits 2008-02, Vol.43 (2), p.361-370
Main Authors: ROH, Jeongjin, BYUN, Sanho, CHOI, Youngkil, ROH, Hyungdong, KIM, Yi-Gyeong, KWON, Jong-Kee
Format: Article
Language:English
Subjects:
Amplifiers
Applied sciences
Architecture
Circuit properties
Design. Technologies. Operation analysis. Testing
Direct current
Dynamic range
Electric potential
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Integrated circuits
Modulators
Positive feedback
Sampling
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Signal convertors
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A 0.9-V 60-muW delta-sigma modulator is designed using standard CMOS 0.13-mum 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-l-V modulators.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2007.914266