Tunable CMOS-based current mode fifth-order ladder low-pass filter

Author

Prommee, Pipat ; Wongprommoon, Natapong

Author_Institution

Dept. of Telecommun. Eng., King Mongkut´s Inst. of Technol. Ladkrabang, Bangkok, Thailand

fYear

2013

fDate

2-4 July 2013

Firstpage

397

Lastpage

401

Abstract

This paper presents CMOS-based current mode fifth-order ladder low-pass filter by using lossy and lossless integrators and grounded capacitors without external resistors. The lossy and lossless integrators are realized based on CMOS technology. The proposed circuit contains 27 NMOS transistors and 5 grounded capacitors. The frequency response can be controlled between 10kHz and 100MHz by adjusting bias current between 0.002 μA and 20 μA. This filter uses 1.5V power supply with 0.8 mW power consumption. Due to the filter consists of grounded capacitors without resistance and uses low power supply, it is suitable for integration. PSPICE simulation results are carried out by TSMC 0.18μm technology.

Keywords

CMOS analogue integrated circuits; SPICE; VHF filters; capacitors; current-mode circuits; integrating circuits; ladder filters; low-pass filters; NMOS transistor; PSPICE simulation; current 0.002 muA; current 20 muA; current mode fifth order ladder low pass filter; frequency 10 kHz to 100 MHz; grounded capacitor; lossless integrator; lossy integrator; power 0.8 mW; size 0.18 mum; tunable CMOS low pass filter; voltage 1.5 V; Integrator; ladder; low-pass; low-voltage; tunable filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications and Signal Processing (TSP), 2013 36th International Conference on

Conference_Location

Rome

Print_ISBN

978-1-4799-0402-0

Type

conf

DOI

10.1109/TSP.2013.6613961

Filename

6613961