Amperometric Readout and Electrode Array Chip for Bioelectrochemical Sensors

Andrew Mason, Yue Huang, Chao Yang, Jichun Zhang
2007 2007 IEEE International Symposium on Circuits and Systems  
As nanostructured bioelectronic interfaces continue to evolve for sensor applications, new readout circuits are needed to harness their capabilities. This paper presents a single-chip amperometric readout circuit and electrode array system suitable for bioelectrochemical measurements. The chip features a CMOS potentiostat with high resolution, rangeprogrammable current readout and electrochemical cell potential drive circuitry, which can perform on-chip chronoamperometry and cyclic voltammetry
more » ... cyclic voltammetry assays. Through post-CMOS fabrication, the surface of the chip is prepared with an array of electrodes suitable for formation of bioelectronic interfaces and on-chip bioelectrochemical measurements. The 3x3mm 2 chip nominally hosts a 4x4 working electrode array and supports amperometric outputs ranging from 10pA to 10µA with sub-pA resolution.
doi:10.1109/iscas.2007.378452 dblp:conf/iscas/MasonHYZ07 fatcat:dp7m2jmiaba7nbvv7vdwotnupe