DISCRETE TIME ANALOG CIRCUIT AND RECEIVER USING SAME
First Claim
1. A discrete-time analog circuit comprising:
- a rotating capacitor circuit;
at least one coefficient circuit including;
a potential holding section that amplifies input potential or input charge, the potential holding section connected to an input line of the rotating capacitor circuit; and
n charge holding sections disposed in series with the potential holding section and in parallel with each other, anda circuit connection switching section that sequentially changes the pairing of a first charge holding section and a second charge holding section among the n charge holding sections, the first charge holding section being connected to the potential holding section and charged thereby, the second charge holding section being connected to the input line not via the potential holding section and sharing charge with the rotating capacitor circuit or being held at the potential at the rotating capacitor circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
The discrete time analog circuit (100) is provided with: a rotate capacitor circuit (150); an amplifier (141) that is connected to the input line or the output line of the rotate capacitor (150), and amplifies the input potential or input charge; a coefficient circuit (140) that is positioned in series with the amplifier (141), and has two history capacitors (143-1, 143-2) positioned parallel to each other; a first active capacitor among the two history capacitors (143-1, 143-2) that is connected to and charges the amplifier (141); and a clock generation circuit (110) that is connected to the input line or the output line without the involvement of the amplifier (141), and that sequentially changes the pairing of the rotate capacitor circuit (150) a second active capacitor, which shares a charge with the rotate capacitor circuit (150).
12 Citations
18 Claims
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1. A discrete-time analog circuit comprising:
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a rotating capacitor circuit; at least one coefficient circuit including; a potential holding section that amplifies input potential or input charge, the potential holding section connected to an input line of the rotating capacitor circuit; and n charge holding sections disposed in series with the potential holding section and in parallel with each other, and a circuit connection switching section that sequentially changes the pairing of a first charge holding section and a second charge holding section among the n charge holding sections, the first charge holding section being connected to the potential holding section and charged thereby, the second charge holding section being connected to the input line not via the potential holding section and sharing charge with the rotating capacitor circuit or being held at the potential at the rotating capacitor circuit. - View Dependent Claims (2, 5, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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3. A discrete-time analog circuit comprising:
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a rotating capacitor circuit; at least one coefficient circuit including; a potential holding section that amplifies output potential or output charge, the potential holding section connected to an output line of the rotating capacitor circuit; and n charge holding sections disposed in series with the potential holding section and in parallel with each other, and a circuit connection switching section that sequentially changes the pairing of a first charge holding section and a second charge holding section among the n charge holding sections, the first charge holding section being connected to the potential holding section and charged thereby, the second charge holding section being connected to the output line not via the potential holding section and sharing charge with the rotating capacitor circuit or held at the potential at the rotating capacitor circuit. - View Dependent Claims (4, 6, 8, 18)
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Specification