Multi-channel multiplexer
AssigneeTexas Instruments Incorporated
InventorsNitin AGARWAL, Kunal Suresh KARANJKAR, Venkata Ramanan R
Life of this patent
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Abstract
A circuit includes a first switch assembly having a first input node and a first output node, and a second switch assembly having a second input node and a second output node. The circuit further includes a third switch assembly an operational amplifier, and a buffer. The third switch assembly has a third input node and a third output node. The third input node is coupled to the second output node, and the third output node is coupled to the first output node. The buffer has a buffer input and a buffer output. The buffer input is coupled to an input stage of the operational amplifier. The buffer output is coupled to the third switch assembly.
Claims17
A circuit comprising:
- a plurality of inputs;
- a plurality of switch assemblies coupled to the plurality of inputs, wherein:
- each of the plurality of switch assemblies includes:
- a first switch coupled between a respective input of the plurality of inputs and an internal node;
- a second switch coupled to the internal node;
- and
- a third switch coupled to the internal node;
- the second switches of each of the plurality of switch assemblies are coupled together;
- and
- the plurality of switch assemblies includes a subset of the switch assemblies for which the respective third switches are coupled together.
A circuit comprising:
- a plurality of inputs;
- a multiplexer output node;
- a plurality of switch assemblies coupled between the plurality of inputs and the multiplexer output node, wherein:
- each of the plurality of switch assemblies includes:
- a first switch coupled between a respective input of the plurality of inputs and an internal node;
- a second switch coupled between the internal node and the multiplexer output node;
- and
- a third switch coupled to the internal node;
- the plurality of switch assemblies includes a first switch assembly for which the respective third switch is not coupled to the respective third switches of a remainder of the plurality of switch assemblies;
- and
- the plurality of switch assemblies includes a second switch assembly and a third switch assembly for which the respective third switches are coupled together.
Dependencies are inferred from the claim text.