Title :
Fully integrated analog filters using bipolar-JFET technology [active fifth order Chebyshev low-pass realisation]
fDate :
12/1/1978 12:00:00 AM
Abstract :
A new approach for realizing high-order analog filters which can be fully integrated using a compatible bipolar and ion-implanted JFET process is described. This approach is based on the recognition that what is really needed is a long time constant monolithic integrator which can be effectively realized in a small silicon area. These integrators have been designed, fabricated, and used in a `leapfrog´ or active ladder configuration to realize a fifth-order 8 kHz Chebyshev low-pass filter with 0.1 dB passband ripple. No external trimming operations and no anti-aliasing prefilter are required.
Keywords :
Active filters; Low-pass filters; Monolithic integrated circuits; active filters; low-pass filters; monolithic integrated circuits; Active filters; Biographies; Channel bank filters; Chebyshev approximation; Circuits and systems; Filtering; Integrated circuit technology; Solid state circuits; Switched capacitor circuits; Switching circuits;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.1978.1052055
