Title :
A flexible transconductor-capacitor filter demonstrator
Author_Institution :
Phillips Res. Lab., Redhill, UK
Abstract :
A flexible implementation of a transconductor-capacitor low-pass filter integrated in a standard bipolar process is described. The integrated filters can, by varying a single off-chip resistor value and/or off-chip capacitor values, be designed to operate successfully with a cutoff frequency in the range from a few hundred of hertz to a few megahertz. Many different filter responses can be demonstrated with the integrated circuit produced. The type of filter approach described has great potential for use in an analog standard cell library
Keywords :
active filters; bipolar integrated circuits; analog standard cell library; continuous time filters; cutoff frequency; external capacitors; external resistors; filter demonstrator; flexible implementation; high order filters; integrated filters; low-pass filter; off-chip capacitor; operational transconductor amplifiers; single off-chip resistor; standard bipolar process; transconductor-capacitor filter; tuning; Active filters; Capacitors; Chebyshev approximation; Circuits; Current control; Frequency; Low pass filters; Passive filters; Shape; Transconductors;
Conference_Titel :
Circuits and Systems, 1989., IEEE International Symposium on
Conference_Location :
Portland, OR
DOI :
10.1109/ISCAS.1989.100538
