Dynamic calibration of feedback DAC non-linearity for a 4th order CT sigma delta for digital hearing aids

Autor:	Sayfe Kiaei, I. Deligoz, Syed R. Naqvi, Bertan Bakkaloglu
Rok vydání:	2011
Předmět:	Engineering Total harmonic distortion business.industry Order (business) Electronic engineering Harmonic Calibration Non linearity business Delta-sigma modulation Noise floor Voltage
Zdroj:	SoCC
DOI:	10.1109/socc.2011.6085129
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bb93844a7f7f1991504b869598c165ee https://doi.org/10.1109/socc.2011.6085129 Zobrazit plný text záznamu