A low-voltage CMOS Programmable Gain Amplifier for WSN application

Author

Libin, Huang ; Zhiqun, Li

Author_Institution

Sensor Network Technol. Res. Center, Southeast Univ., Wuxi, China

fYear

2011

fDate

9-11 Nov. 2011

Firstpage

1

Lastpage

4

Abstract

This paper presents a low-voltage and low-power Programmable Gain Amplifier (PGA) designed in a 0.18μm CMOS process, which is applied in Wireless Sensor Network (WSN). To achieve high gain range and linearity performance, multi-stage cascade based on g_m-boosted differential pair with degenerated resistor and fully-differential resistive feedback topology is used. AC coupling is utilized to eliminate the DC offset due to its stability, low power and easy to implement. The voltage gain of this PGA can be changed from 0dB to 70dB with 2dB step. The -3dB bandwidth is larger than 11MHz at the highest gain. The current consumption is only 1.9mA with a supply voltage of IV.

Keywords

CMOS digital integrated circuits; amplifiers; integrated circuit design; low-power electronics; wireless sensor networks; AC coupling; DC offset elimination; WSN application; current 1.9 mA; degenerated resistor; differential pair; fully-differential resistive feedback topology; gain 0 dB to 70 dB; low-power PGA design; low-voltage CMOS programmable gain amplifier; size 0.18 mum; voltage 1 V; wireless sensor network; Bandwidth; Electronics packaging; Gain; Linearity; Resistors; Transistors; Wireless sensor networks; PGA; WSN; low-power; low-voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Signal Processing (WCSP), 2011 International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4577-1009-4

Electronic_ISBN

978-1-4577-1008-7

Type

conf

DOI

10.1109/WCSP.2011.6096694

Filename

6096694