DocumentCode
626817
Title
A 0.3mm2 60μW 11.2b ENOB signal acquisition ASIC for resistive bridge sensors
Author
Pun, Alan ; Wong, Johnson ; Chan, Gordon ; Wong, Wing Kee ; Kwong, David ; Wang, K.C.
Author_Institution
Hong Kong Appl. Sci. & Technol. Res. Inst., Hong Kong, China
fYear
2013
fDate
19-23 May 2013
Firstpage
1500
Lastpage
1503
Abstract
A signal acquisition IC for 3-input resistive bridge sensors has been realized in 0.18um CMOS. It features a low noise programmable amplifier which achieved 1.8μVrms input referred noise and 120dB CMRR, a SAR ADC with 11.2 bits ENOB, an embedded temperature sensor and configurable oscillator. The active area of the chip is 0.3mm2 which consumes 60μW and 18μW at 1.8V supply with output data rate (ODR) of 400Hz and 100Hz respectively.
Keywords
CMOS integrated circuits; analogue-digital conversion; application specific integrated circuits; intelligent sensors; low noise amplifiers; oscillators; signal detection; temperature sensors; 3-input resistive bridge sensors; CMRR; ENOB signal acquisition ASIC; ODR; SAR ADC; configurable oscillator; embedded temperature sensor; frequency 100 Hz; frequency 400 Hz; input referred noise; low noise programmable amplifier; output data rate; power 18 muW; power 60 muW; voltage 1.8 V; voltage 1.8 muV; word length 11.2 bit; Choppers (circuits); Noise; Oscillators; Sensitivity; Temperature measurement; Temperature sensors;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems (ISCAS), 2013 IEEE International Symposium on
Conference_Location
Beijing
ISSN
0271-4302
Print_ISBN
978-1-4673-5760-9
Type
conf
DOI
10.1109/ISCAS.2013.6572142
Filename
6572142
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