Title :
Integrated switched-capacitor FDNR filter
Author :
Cooperman, Michael ; Kapral, Christopher W.
fDate :
8/1/1983 12:00:00 AM
Abstract :
A switched-capacitor filter using a frequency-dependent negative resistance (FDNR) is described. FDNR filters closely simulate passive LC filters, thereby retaining passband stability and design simplicity. The filter has been implemented in LSI and designed to perform the transmit/receive filtering for PCM codecs. Circuits are described that overcome the floating node and floating amplifier problems previously associated with FDNRs.
Keywords :
Active filters; Codecs; Field effect integrated circuits; Linear integrated circuits; Negative resistance; Switched capacitor networks; Switched filters; active filters; codecs; field effect integrated circuits; linear integrated circuits; negative resistance; switched capacitor networks; switched filters; Circuit simulation; Frequency response; Low pass filters; MOS capacitors; Passband; Passive filters; Resistors; Switched capacitor circuits; Switches; Transfer functions;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.1983.1051959
