Switched-capacitor filter based on unity gain buffer for high speed analog signal processing applications

Author

Eltokhy, Mostafa A R

Author_Institution

Electron. Technol. Dept., Helwan Univ., Cairo, Egypt

fYear

2011

fDate

Nov. 29 2011-Dec. 1 2011

Firstpage

151

Lastpage

155

Abstract

In this paper a new voltage buffer to realize high speed and low power dissipation switched-capacitor filters is proposed. The drain-follower achieves 300MHz bandwidth with 2pF load; DC gain of 0.993V/V, 1mV offset voltage, -60 dB total harmonic distortion at 0.4 V_PP output voltage and 58.5μW power dissipation from 1.5V supply. A unity-gain buffer switched-capacitor biquad filter has been implemented in 0.5μm CMOS technology. The circuit has been sending for fabrication. Simulation results of the biquad filter indicate operation at 100 MHz with 6mW power consumption from a 1.5 V supply can be achieved.

Keywords

CMOS integrated circuits; biquadratic filters; low-power electronics; signal processing; switched capacitor filters; CMOS technology; analog signal processing application; bandwidth 300 MHz; drain-follower; frequency 100 MHz; low power dissipation switched-capacitor filter; power 58.5 muW; size 0.5 mum; unity gain buffer; unity-gain buffer switched-capacitor biquad filter; voltage 0.4 V; voltage 1.5 V; voltage buffer; Clocks; Impedance; Integrated circuit modeling; Logic gates; Switches; Switching circuits; Transistors; analog signal processing; high speed; switched-capacitor; unity gain buffer;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Engineering & Systems (ICCES), 2011 International Conference on

Conference_Location

Cairo

Print_ISBN

978-1-4577-0127-6

Type

conf

DOI

10.1109/ICCES.2011.6141031

Filename

6141031