Title :
82 dB SNDR 20-channel incremental ADC with optimal decimation filter and digital correction
Author :
Yu, Wenhuan ; Aslan, Mehmet ; Temes, Gabor C.
Author_Institution :
Sch. of EECS, Oregon State Univ., Corvallis, OR, USA
Abstract :
A third-order multi-channel incremental ADC with a 5-level quantizer is presented. An optimal decimation filter is used which minimizes the weighted sum of the thermal and quantization output noises. Digital correction is used to suppress mismatches in the multi-bit DAC. The prototype obtained a signal-to-noise-and-distortion ratio of 81.5 dB, within a total of 21.7 kHz signal bandwidth at a 10 MHz sampling frequency. The total power consumption for 20 channels is 6.7 mW.
Keywords :
analogue-digital conversion; digital filters; distortion; 5-level quantizer; SNDR; bandwidth 21.7 kHz; digital correction; frequency 10 MHz; multibit DAC; multichannel incremental ADC; optimal decimation filter; power 6.7 mW; signal-to-noise-and-distortion ratio; Calibration; Capacitors; Gabor filters; Modulation; Quantization; Signal to noise ratio;
Conference_Titel :
Custom Integrated Circuits Conference (CICC), 2010 IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-5758-8
DOI :
10.1109/CICC.2010.5617596
