Title :
A 84.7-DR wide BW incremental ADC using CT structure
Author :
Ting-Yang Wang ; Tai-Cheng Lee
Author_Institution :
Grad. Inst. of Electron. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
This work uses continuous-tome (CT) structure to make the sigma-delta modulator faster and consuming less power. A third-order 3-bit CT-IDC with OSR=64 fabricated in TSMC T18 1P6M technology is proposed in the paper. The modulator is operated at 100MHz sampling clock. It achieves dynamic range of 84.7 dB, peak SNDR of 73.82 dB within the 737-kHz bandwidth. This chip dissipates 6.6mA from a 3.3V supply. The core area of this modulator occupies smaller than 0.25mm2.
Keywords :
sigma-delta modulation; CT structure; TSMC T18 1P6M technology; bandwidth 737 kHz; continuous-time structure; current 6.6 mA; frequency 100 MHz; incremental sigma-delta data modulator; sampling clock; third-order CT-IDC; voltage 3.3 V; wide BW incremental ADC; word length 3 bit; Biomedical measurement; Clocks; Delays; Modulation; Sigma-delta modulation; Signal to noise ratio; continuous-time; discrete-time; incremental sigma-delta data converter;
Conference_Titel :
VLSI Design, Automation and Test (VLSI-DAT), 2015 International Symposium on
Conference_Location :
Hsinchu
DOI :
10.1109/VLSI-DAT.2015.7114519
