DocumentCode
446666
Title
Software linearization of DA converters
Author
Azarian, Michel ; Knudsen, Niels ; Kayssi, Ayman I.
Author_Institution
Nat. Instruments, Austin, TX, USA
Volume
1
fYear
2003
fDate
27-30 Dec. 2003
Firstpage
9
Abstract
This paper presents a method for achieving increased resolution in Nyquist-rate DA converters, by using techniques from over-sampling DA converters. After characterizing the linearity errors of the DA converter, we use a software implementation of the method to pre-distort the digital code before sending it to the converter. The conversion of the pre-distorted signal causes an improvement in effective resolution of the generated analog signal from 12 bits to an equivalent of up to 16 bits for the National Instruments 5411 board.
Keywords
Nyquist criterion; digital-analogue conversion; linearisation techniques; Nyquist-rate DA converters; digital code predistortion; digital-analog converters; linearity errors; software linearization; Analog-digital conversion; Error correction; Harmonic distortion; Instruments; Linearity; Noise reduction; Noise shaping; Quantization; Signal resolution; Transfer functions;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2003 IEEE 46th Midwest Symposium on
ISSN
1548-3746
Print_ISBN
0-7803-8294-3
Type
conf
DOI
10.1109/MWSCAS.2003.1562206
Filename
1562206
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