Document Type and Number:
Japanese Patent JPH0420283
Kind Code:
B2
Abstract:
A switched capacitor MOS high-pass filter (10) includes a blocking capacitor (C1) which accepts an input signal at one side (IN). A first electronic toggle switch (S1) connects the gate of a depletion-mode buffer transistor (T1) alternately to the other side of the blocking capacitor (C1) and to ground in response to a pair of non-overlapping switching pulse trains ( phi 1), ( phi 2). A depletion-mode transistor (T2) provides current to the buffer transistor (T1). One side of an output capacitor (C2) is connected to the source of the buffer transistor (T1). A second toggle switch (S2) connects the other side of the output capacitor (C2) alternately to an output terminal (OUT) and to ground. Also disclosed is a filter (14) which includes a correction network (18) to eliminate from the output signal the effect of a feed-through error voltage generated by the action of the first switch (S1).
Inventors:
UEIKOO REINORUDO SAARI
Application Number:
JP16061783A
Publication Date:
April 02, 1992
Filing Date:
September 02, 1983
Export Citation:
Assignee:
EI TEII ANDO TEII TEKUNOROJIIZU INC
International Classes:
H03H19/00
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