Title :
A CCCS for high frequency filters
Author :
Gálvez-Durand, Federico ; Caloba, Luiz ; de Queiroz, A.C.M.
Author_Institution :
Programa de Engenharia Eletrica, Univ. Federal do Rio de Janeiro, Brazil
fDate :
30 May-2 Jun 1994
Abstract :
In this paper we propose a novel CCCS with output conductance less than 10-8 mhos and harmonic distortion less than 0.6% at 33 MHz, low sensitivity to mismatches and 0.7 mW power consumption when driven with ±2.5 V power, supplies. A high performance OTA (Operational Transconductance Amplifier) was designed using this CCCS and tested in a 10 MHz 5th order elliptic lowpass OTA-C filter fed with ±2.5 V. The filter THD was less than 1% for Vin=1V(pp) at the cutoff frequency in the 8 MHz to 12 MHz range
Keywords :
active filters; elliptic filters; harmonic distortion; low-pass filters; operational amplifiers; 0.7 mW; 1E-8 mho; 2.5 V; 33 MHz; 8 to 12 MHz; CCCS; Operational Transconductance Amplifier; THD; elliptic lowpass OTA-C filter; harmonic distortion; high frequency filters; mismatch sensitivity; output conductance; power consumption; Circuit simulation; Cutoff frequency; Feedback circuits; Harmonic distortion; MOSFETs; Mirrors; Operational amplifiers; Power harmonic filters; Transconductance; Voltage;
Conference_Titel :
Circuits and Systems, 1994. ISCAS '94., 1994 IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-1915-X
DOI :
10.1109/ISCAS.1994.409437
