Title :
A fully-differential input amplifier with band-pass filter for biosensors
Author :
Xin Meng ; Wei Li ; Temes, Gabor C.
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA
Abstract :
An on-chip teraohm resistance realization scheme using a switched-capacitor ladder is presented in this paper. Linear tuning of the resistance is realized by controlling the sampling frequency. Using this scheme, a band-pass filter with very low corner frequency (~ 0.3 Hz) was implemented in a fully differential amplifier for a small chip area in a standard CMOS process.
Keywords :
CMOS integrated circuits; amplifiers; band-pass filters; biomedical electronics; biosensors; chemical sensors; lab-on-a-chip; switched current circuits; CMOS process; band-pass filter; biosensors; fully-differential input amplifier; on-chip teraohm resistance realization scheme; sampling frequency; switched-capacitor ladder; Band-pass filters; Biosensors; Capacitors; Immune system; Noise; Resistors; Switches; Band-pass filter; CMOS; Corner Frequency; Switched-capacitor ladder; Teraohm resistance;
Conference_Titel :
Circuits and Systems (ISCAS), 2014 IEEE International Symposium on
Conference_Location :
Melbourne VIC
Print_ISBN :
978-1-4799-3431-7
DOI :
10.1109/ISCAS.2014.6865055
