Title :
CMOS pipelined ADC employing dither to improve linearity
Author :
Fetterman, H. Scott ; Martin, David G. ; Rich, David A.
Author_Institution :
Lucent Technol., AT&T Bell Labs., Allentown, PA, USA
Abstract :
This paper presents a new method for applying linearity improving dither to a pipelined ADC employing digital error correction. This dither energy remains internal to the converter, only causing correctable errors in the internal uncorrected digital data stream. Unlike adding dither to the input signal, this new dither method does not consume signal bandwidth or dynamic range. Spurious free dynamic range improvements of 15 dB have been realized
Keywords :
CMOS integrated circuits; analogue-digital conversion; error correction; pipeline processing; CMOS pipelined ADC; digital error correction; dither; dynamic range improvement; linearity improvement; Analog-digital conversion; Bandwidth; Dynamic range; Error correction; Linearity; Noise reduction; Pipelines; Sampling methods; Signal to noise ratio; Software radio;
Conference_Titel :
Custom Integrated Circuits, 1999. Proceedings of the IEEE 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-5443-5
DOI :
10.1109/CICC.1999.777253
