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US 2002/0118061 A1Published application
Method of controlling common-mode in differential gm-c circuits
AssigneeIntel Corporation
InventorMichael W. Altmann
Life of this patent
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Abstract
An apparatus and method is disclosed wherein a first gm-C cell has an output, a second gm-C cell has an input coupled to the output of the first gm-C cell, and a feedback loop is coupled between the first and the second gm-C cell to control a CM voltage with respect to a reference.
Claims15
A filter structure apparatus comprising:
- a first gm-C cell having an output;
- a second gm-C cell having an input coupled to said output of said first gm-C cell;
- and
- a feedback loop coupled between the first and the second gm-C cell to control a CM voltage with respect to a reference.
1 more element
An apparatus comprising:
- a means for providing a first gm-C cell output;
- a means for providing a second gm-C cell input coupled to said output of said first gm-C cell;
- and
- a means for providing a feedback loop coupled between the first and the second gm-C cell for controlling a CM reference.
1 more element
A process comprising:
- producing an output from a first gm-C cell;
- providing the output as an input to a second gm-C cell;
- and
- coupling the output through a transistor in a feedback loop to control a CM voltage with respect to a reference.
1 more element
Dependencies are inferred from the claim text.