Title:
INTEGRATOR AND SECONDARY ORDER FILTER
Document Type and Number:
Japanese Patent JPS553291
Kind Code:
A
Abstract:
An integrator circuit of the type having an operational amplifier with an integrating capacitor (C1) in a feedback loop from its output to its input and having a switched capacitor (K0C1) as equivalent of a resistor connection between a signal source and said input, is characterized in that said switched capacitor is alternately discharged and connected between said signal source and said input with a predetermined frequency, by means of FET switches operated by clock pulses phi 1, phi 2. A second stage of similar form, but having its switches energised in a different sequence is connected in cascade with the first to provide a second order biquadratic filter.
Inventors:
KENESU UIRIAMU MAATEIN
SUTANREI DANIERU ROOZENBAUMU
SUTANREI DANIERU ROOZENBAUMU
Application Number:
JP3940079A
Publication Date:
January 11, 1980
Filing Date:
April 03, 1979
Export Citation:
Assignee:
NORTHERN TELECOM LTD
International Classes:
H03H11/12; H03H19/00; (IPC1-7): H03H11/12
Next Patent: METHOD FOR GENERATING SCRIBING DATA