Title :
Low-voltage continuous time filters based on OTAs and Miller integrators
Author :
Ramírez-Angulo, Jaime ; González-Altamirano, Gerardo
Author_Institution :
Dept. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
Abstract :
An approach to implement low-voltage continuous time filters using simple OTAs and Miller integrators is presented. The technique allows direct translation of system block diagram into a CMOS circuit implementation using differential pairs as OTAs and gain stages as Miller Integrators. A efficient compensation technique to cancel excess phase in Miller integrators is discussed. A high frequency compensated CMOS universal filter structure is discussed and experimentally verified
Keywords :
CMOS analogue integrated circuits; compensation; continuous time filters; integrating circuits; operational amplifiers; Miller integrator; OTA; differential pair; gain stage; high frequency compensated CMOS universal filter; low-voltage continuous time filter; system block diagram; Active filters; Capacitors; Circuit simulation; Frequency; MOSFET circuits; Operational amplifiers; Parasitic capacitance; Resistors; Transconductors; Tuning;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.541754
