Analog circuits having improved transistors, and methods therefor
First Claim
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1. A circuit, comprising:
- a plurality of transistors having controllable current paths coupled between at least a first node and a second node, the transistors configured to generate an analog electrical output signal in response to an analog input value;
whereinat least one of the transistors operates with an applied body bias, and has a deeply depleted channel formed below its gate that includes a substantially undoped channel region formed over a doped screen layer formed over a doped body region, with the doped screen layer extending between and in contact with a source and a drain.
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Abstract
Circuits are disclosed that may include a plurality of transistors having controllable current paths coupled between at least a first and second node, the transistors configured to generate an analog electrical output signal in response to an analog input value; wherein at least one of the transistors has a deeply depleted channel formed below its gate that includes a substantially undoped channel region formed over a relatively highly doped screen layer formed over a doped body region.
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Citations
20 Claims
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1. A circuit, comprising:
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a plurality of transistors having controllable current paths coupled between at least a first node and a second node, the transistors configured to generate an analog electrical output signal in response to an analog input value;
whereinat least one of the transistors operates with an applied body bias, and has a deeply depleted channel formed below its gate that includes a substantially undoped channel region formed over a doped screen layer formed over a doped body region, with the doped screen layer extending between and in contact with a source and a drain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A circuit, comprising:
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a plurality of transistors having controllable current paths coupled between at least a first and second node, the transistors configured to generate an analog electrical output signal in response to an analog input value; wherein at least one of the transistors operates with an applied body bias and has a deeply depleted channel formed below its gate that includes a Vt set layer formed between a substantially undoped channel region and a doped screen layer formed over a doped body region, with both the Vt set layer and the doped screen layer extending between and in contact with a source and a drain. - View Dependent Claims (17, 18, 19, 20)
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Specification