Reducing the effect of parasitic mismatch at amplifier inputs
First Claim
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1. A circuit, comprising:
- an amplifier comprising a differential input stage including a first input terminal and a second input terminal;
a differential input line coupled to the first input terminal and the second input terminal; and
shielding at least partially encompassing the differential input line;
wherein the shielding is connected to a node of the differential input stage of the amplifier;
the differential input stage comprises;
a first transistor having a source, a drain, and a gate;
a second transistor having a source, a drain, and a gate; and
wherein the source of the first transistor is connected to the source of the second transistor forming the node.
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Abstract
A circuit includes an amplifier including a differential input stage including a first input terminal and a second input terminal. The circuit further includes a differential input line coupled to the first input terminal and the second input terminal, and shielding at least partially encompassing the differential input line. The shielding is connected to a node of the differential input stage of the amplifier.
6 Citations
18 Claims
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1. A circuit, comprising:
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an amplifier comprising a differential input stage including a first input terminal and a second input terminal; a differential input line coupled to the first input terminal and the second input terminal; and shielding at least partially encompassing the differential input line; wherein the shielding is connected to a node of the differential input stage of the amplifier; the differential input stage comprises; a first transistor having a source, a drain, and a gate; a second transistor having a source, a drain, and a gate; and wherein the source of the first transistor is connected to the source of the second transistor forming the node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method, comprising:
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providing an amplifier comprising a differential input stage including a first input terminal and a second input terminal; connecting a differential input line to the first input terminal and the second input terminal; forming shielding at least partially encompassing the differential input line; and connecting the shielding to a node of the differential input stage of the amplifier wherein the differential input stage comprises; a first transistor having a source, a drain, and a gate; and a second transistor having a source, a drain, and a gate; wherein the source of the first transistor is connected to the source of the second transistor forming the node. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification