Title :
A 1.72μW, 23.2fj/conversion step successive approach ADC for bio-medical signal acquisition
Author :
Wang, Wei-Sheng ; Tang, Kea-Tiong
fDate :
Aug. 30 2011-Sept. 3 2011
Abstract :
This paper presents a successive approach register (SAR) analog-to-digital converter (ADC) with a novel hybrid digital-to-analog converter (DAC) architecture: half junction splitting (J.S.) and half binary weighted capacitor DAC. This DAC maintains low power consumption of J.S. DAC and the high signal-to-noise plus distortion ratio (SNDR) of binary weighted capacitor DAC. The power dissipation of the circuit is 1.72μW, SNDR 59.17dB, spurious free dynamic range (SFDR) 73.39dB, and the FOM 23.2fj/conversion step with 0.9V supply voltage. The proposed circuit is fabricated in TSMC 0.18μm 1P6M CMOS process technology.
Keywords :
CMOS integrated circuits; analogue-digital conversion; biomedical equipment; capacitors; low-power electronics; medical signal detection; 23.2fj-conversion step successive approach ADC; JS DAC low power consumption; SAR analog-to-digital converter; TSMC 0.18μm 1P6M CMOS process technology; biomedical signal acquisition; circuit power dissipation; half binary weighted capacitor DAC; half junction splitting; noise figure 59.17 dB; novel hybrid digital-to-analog converter architecture; power 1.72 muW; size 0.18 mum; spurious free dynamic range; successive approach register; voltage 0.9 V; Capacitors; Joining processes; Noise; Power demand; Power dissipation; Switches; Voltage control; Analog-Digital Conversion; Electronics, Medical;
Conference_Titel :
Engineering in Medicine and Biology Society, EMBC, 2011 Annual International Conference of the IEEE
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-4121-1
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2011.6090742
