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.

fYear

2005

fDate

1-3 Nov. 2005

Firstpage

97

Lastpage

100

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Asian Solid-State Circuits Conference, 2005

Conference_Location

Hsinchu

Print_ISBN

0-7803-9162-4

Electronic_ISBN

0-7803-9163-2

Type

conf

DOI

10.1109/ASSCC.2005.251816

Filename

4017540