Title :
An ultra low-voltage Gm-C filter for video applications
Author :
Mehrmanesh, S. ; Vahidfar, M.B. ; Aslanzadeh, H.A. ; Atarodi, M.
Abstract :
A new, ultra low-voltage, linear CMOS OTA is described. A 4th order, 18 MHz low pass Butterworth Gm-C filter has been designed with this new OTA stage for video applications. In this filter, a new, fully digital approach has been used for frequency tuning. The THD of the filter, for an input signal of 0.5 VPP, is better than -60 dB. All of the circuits are designed based on a 0.25 μm CMOS process technology with a single 1 V power supply.
Keywords :
Butterworth filters; CMOS analogue integrated circuits; circuit simulation; circuit tuning; integrated circuit design; low-pass filters; low-power electronics; operational amplifiers; radiofrequency filters; video signal processing; 0.25 micron; 0.5 V; 1 V; 18 MHz; Butterworth filter; CMOS analog circuit design; digital frequency tuning; filter THD; linear CMOS OTA; low pass Gm-C filter; ultra low-voltage filter; video filter; CMOS technology; Circuit optimization; Digital filters; Frequency; Integrated circuit technology; Low voltage; Power supplies; Resistors; Roentgenium; Tuning;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205625
