DocumentCode :
2393198
Title :
Dynamic calibration of feedback DAC non-linearity for a 4th order CT sigma delta for digital hearing aids
Author :
Naqvi, Syed R. ; Deligoz, Ilker ; Kiaei, Sayfe ; Bakkaloglu, Bertan
Author_Institution :
Arizona State Univ., Tempe, AZ, USA
fYear :
2011
fDate :
26-28 Sept. 2011
Firstpage :
109
Lastpage :
113
Abstract :
In this paper we present a calibration scheme for calibrating the 2nd order harmonic distortion of feedback DAC used in a 4th order CT-ΣΔ. This scheme was implemented in a 0.25um CMOS process with a supply voltage of 1.2V, the 4th order CT-ΣΔ was able to achieve 68dB measured SNR, while the 2nd order harmonic was reduced by about 20dB suppressing it to the thermal noise floor.
Keywords :
calibration; harmonic distortion; hearing aids; 2nd order harmonic distortion; 4th order CT sigma delta; CMOS process; digital hearing aids; dynamic calibration; feedback DAC nonlinearity; Calibration; Harmonic distortion; MOS devices; Modulation; Signal to noise ratio; Transient analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
SOC Conference (SOCC), 2011 IEEE International
Conference_Location :
Taipei
ISSN :
2164-1676
Print_ISBN :
978-1-4577-1616-4
Electronic_ISBN :
2164-1676
Type :
conf
DOI :
10.1109/SOCC.2011.6085129
Filename :
6085129
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2393198
بازگشت