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Journal of Applied Sciences
  Year: 2008 | Volume: 8 | Issue: 9 | Page No.: 1771-1775
DOI: 10.3923/jas.2008.1771.1775
 
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Design of a Low-Voltage High-Speed Switched-Capacitor Filters Using Improved Auto Zeroed Integrator

M. Rashtian, O. Hashemipour and K. Navi

Abstract:
The low-voltage high-speed auto zeroed integrator characteristics is improved by applying current steering mechanism in the opamp structure of the integrators and utilizing the non-linear properties of switches. The proposed design results in considerable reduction of power dissipation. Based on this improvement a band-pass filter with centre frequency of 1 MHz and clock frequency of 6 MHz is designed. Furthermore a new circuit for implementation of an auto-zero low-pass filter is presented. Based on this configuration a fourth order low-pass switched capacitor filter with cut off frequency of 600 KHz and clock frequency of 6 MHz is presented. The proposed circuits are simulated using HSPICE and 0.25 μm CMOS technology at 1.5 V supply voltage.
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How to cite this article:

M. Rashtian, O. Hashemipour and K. Navi, 2008. Design of a Low-Voltage High-Speed Switched-Capacitor Filters Using Improved Auto Zeroed Integrator. Journal of Applied Sciences, 8: 1771-1775.

DOI: 10.3923/jas.2008.1771.1775

URL: https://scialert.net/abstract/?doi=jas.2008.1771.1775

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