Title :
Realization of Trans-impedance Amplifier for Particle Counting Chip
Author :
Huang, Jung-Tang ; Chen, Hsin-Nan
Author_Institution :
Inst. of Mechatronic Eng., Nat. Taipei Univ. of Technol.
Abstract :
MEMS (micro electro mechanical systems) technology could be applied on bio-chips to measure and detect micro objects. Generally, the detected signal is so small that we need to amplify it for next processing (such as A/D converter). In this study, we develop a trans-impedance amplifier (TIA) circuit to detect the blocking conductance when particles across an ion-pore. Consider the simple circuits, simple manufacture process, and the capability of integrating with MEMS process. The TIA circuit and the MEMS ion-pore is designed based on 0.35mum CMOS process. The measured results of this amplifier are 94dBOmega high gain, low noise as the M.D.S. of 25nA, and the bandwidth larger than 15MHz
Keywords :
CMOS integrated circuits; amplifiers; micromechanical devices; particle counting; signal detection; 0.35 micron; CMOS process; MEMS ion-pore; MEMS process; bio-chips; blocking conductance; microelectromechanical systems technology; microobject detection; particle counting chip; signal detection; trans-impedance amplifier; CMOS process; Integrated circuit manufacture; Manufacturing processes; Mechanical systems; Mechanical variables measurement; Micromechanical devices; Object detection; Semiconductor device measurement; Signal detection; Signal processing;
Conference_Titel :
Asian Solid-State Circuits Conference, 2005
Conference_Location :
Hsinchu
Print_ISBN :
0-7803-9162-4
Electronic_ISBN :
0-7803-9163-2
DOI :
10.1109/ASSCC.2005.251816
