Title :
Low-voltage CMOS switched resistor filters
Author :
Abo-El-soud, Mohy A. ; AbdelRassoul, R.A. ; Farrag, Amany K. ; Taha, Ahmad A.
Author_Institution :
Fac. of Eng., Mansoura Univ., Egypt
Abstract :
This paper presents a switched resistor (SR) low-pass filter operated with a 1.2 V power supply. This filter is included in the analog front-end of the data transceiver used for wireless communication system. Such filter is realized in a standard 0.8 μm CMOS technology, with threshold voltage VT=+0.7 V for NMOS transistors and -0.9 V for PMOS transistors. The filter circuit is designed using switched-opamp technique. This technique allows the operation of opamp is turned on and off by the clock frequency. The sampling clock frequency of the filter is 300 kHz and its 3 dB cutoff frequency is 20 kHz. Its power consumption is about 1.2 mW
Keywords :
CMOS analogue integrated circuits; biquadratic filters; low-pass filters; operational amplifiers; switched filters; transceivers; 1.2 V; 1.2 mW; 20 kHz; 300 kHz; LV switched resistor filters; active filters; analog front-end; clock frequency; data transceiver; low-pass filter; low-voltage CMOS filters; switched op amp technique; switched-opamp design; wireless communication system; CMOS technology; Clocks; Communication switching; Cutoff frequency; Low pass filters; MOSFETs; Power supplies; Resistors; Strontium; Transceivers;
Conference_Titel :
Circuits and Systems, 2001. MWSCAS 2001. Proceedings of the 44th IEEE 2001 Midwest Symposium on
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-7150-X
DOI :
10.1109/MWSCAS.2001.986204
