Title :
Design of a band-pass pseudo-2-path switched capacitor ladder filter
Author :
Zahabi, A. ; Shoaei, O. ; Koolivand, Y.
Author_Institution :
ECE Dept., Tehran Univ., Iran
Abstract :
A sixth order band-pass pseudo-two-path switched-capacitor ladder filter is designed Sampling frequency is 300 kHz. Center frequency of the filter is 75 kHz and its bandwidth is 1.5 kHz. A fully differential telescopic operational amplifier is designed for filter integrators in a 0.35 μm CMOS technology using HSPICE simulator. Pass-band gain of the filter is 0.5 dB with (Vin)p-p = 4 V. Supply voltage is 3 V. SDR (signal to total harmonic distortion ratio) obtained is 56.1 dB with (Vin)p-p = 1.2 V at fin ≈ 74.9 kHz. Total power consumption of the filter is 153 μW. Maximum capacitor spread is 53.
Keywords :
CMOS analogue integrated circuits; band-pass filters; circuit simulation; differential amplifiers; integrating circuits; ladder filters; operational amplifiers; switched capacitor filters; 0.35 micron; 0.5 dB; 1.2 V; 1.5 kHz; 153 muW; 3 V; 300 kHz; 4 V; 75 kHz; CMOS technology; HSPICE simulator; band-pass filter; differential telescopic operational amplifier; filter integrators; pseudo-2-path filter; sixth order ladder filter; switched capacitor filter; Band pass filters; Bandwidth; CMOS technology; Capacitors; Differential amplifiers; Frequency; Operational amplifiers; Optical design; Sampling methods; Space technology;
Conference_Titel :
Quality of Electronic Design, 2005. ISQED 2005. Sixth International Symposium on
Print_ISBN :
0-7695-2301-3
DOI :
10.1109/ISQED.2005.43
