TY - JOUR
T1 - A complete low voltage analog lock-in amplifier to recover sensor signals buried in noise for embedded applications
AU - Gabal, M.
AU - Medrano, N.
AU - Calvo, B.
AU - Martínez, P. A.
AU - Celma, S.
AU - Valero, M. R.
PY - 2010/1/1
Y1 - 2010/1/1
N2 - This paper presents a low-voltage 3V single supply analog lock-in amplifier (LIA) for processing small AC sensor signals buried in noise, including those presenting a relative phase with respect to the reference signal. Reference and bias sensor signals are provided by a quadrature oscillator. Experimental results confirm the capability of the proposed lock-in amplifier to effectively recover information from signal to noise ratios below 0.025, with an error below 9%.
AB - This paper presents a low-voltage 3V single supply analog lock-in amplifier (LIA) for processing small AC sensor signals buried in noise, including those presenting a relative phase with respect to the reference signal. Reference and bias sensor signals are provided by a quadrature oscillator. Experimental results confirm the capability of the proposed lock-in amplifier to effectively recover information from signal to noise ratios below 0.025, with an error below 9%.
KW - Condictioning electronics
KW - Lock-in amplifier
KW - Phase-shift detector
KW - Sensor signal conditioning
UR - http://www.scopus.com/inward/record.url?scp=78650597792&partnerID=8YFLogxK
U2 - 10.1016/j.proeng.2010.09.051
DO - 10.1016/j.proeng.2010.09.051
M3 - Article
AN - SCOPUS:78650597792
SN - 1877-7058
VL - 5
SP - 74
EP - 77
JO - Procedia Engineering
JF - Procedia Engineering
ER -