DocumentCode
1745139
Title
Sigma delta modulators using semi-uniform quantizers
Author
Li, Bingxin ; Tenbunen, H.
Author_Institution
Dept. of Electron., R. Inst. of Technol., Kista, Sweden
Volume
1
fYear
2001
fDate
6-9 May 2001
Firstpage
456
Abstract
A semi-uniform quantizer for multi-bit sigma delta modulator is proposed. It has smaller quantization steps for smaller inputs and vice versa. The use of a k-bit semi-uniform quantizer achieves roughly the same performance as using a (k+1)-bit uniform quantizer over main part of the input signal dynamic range. The semi-uniform quantizer can easily be constructed in the same way as constructing a uniform quantizer
Keywords
modulators; quantisation (signal); sigma-delta modulation; white noise; high resolution; input signal dynamic range; internal DAC; multibit sigma delta modulator; performance comparison; semiuniform quantizer; smaller quantization steps; threshold definition; white noise; Delta modulation; Delta-sigma modulation; Dynamic range; Electrostatic discharge; Equations; Gaussian distribution; Noise reduction; Probability distribution; Quantization; White noise;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location
Sydney, NSW
Print_ISBN
0-7803-6685-9
Type
conf
DOI
10.1109/ISCAS.2001.921891
Filename
921891
Link To Document