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US 2004/0070440 A1Published application
Wide-range local bias generator for body bias grid
AssigneeIntel Corporation
InventorsStephen H. Tang, Dinesh Somasekhar, James W. Tschanz, Vivek K. De
Life of this patent
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Abstract
According to some embodiments, a wide-range local bias generator provides a body bias voltage to transistors in an integrated circuit.
Claims20
A circuit, comprising:
- first and second inputs to receive a desired body bias signal, and a third input to receive a supply voltage, the circuit to generate an output signal, said output signal coupled to a fourth input, to cause said output signal to reference to variations in said supply voltage.
A circuit, comprising:
- a differential difference amplifier (DDA) generating an output signal, said DDA having inputs to receive a body bias signal, a local supply voltage, and a desired body bias signal referenced to said local supply voltage;
- and
- an output buffer, to receive said output signal and to generate said desired body bias signal.
A circuit, comprising:
- a body bias circuit including first and second inputs coupled to receive a desired body bias voltage and a third input coupled to receive a supply voltage, said body bias circuit to output a first output signal;
- and
- an output buffer, to receive said first output signal and to output a second output signal having a higher gain than said first output signal, said second output signal input to a fourth input of said body bias circuit to reference said second output signal to said supply voltage, said second output signal further provided to a body bias grid.
An integrated circuit, comprising:
- a bias generation circuit selectively operable to generate a desired body bias voltage;
- and
- a first and a second circuit region, each region comprising
- a local supply voltage,
- a body bias circuit having a first and second input to receive said desired body bias voltage, a third input coupled to a local supply voltage, and a fourth input coupled to receive an output signal from said body bias circuit, said output signal referenced to said local supply voltage, and
- a body bias grid coupled to provide said output signal to a plurality of transistors.
3 more elements
A method of operating an integrated circuit, comprising:
- selecting a desired body bias voltage;
- supplying said desired body bias voltage to a plurality of bias generation circuits distributed on said integrated circuit;
- generating, in each of said plurality of bias generation circuits, a local bias voltage referenced to a local supply voltage associated with each of said plurality of bias generation circuits;
- and
- distributing said local bias voltage to a plurality of transistors associated with each of said plurality of bias generation circuits.
2 more elements
A system comprising:
- a dynamic random access memory to store data from a device, said device comprising:
- a local supply voltage source, to generate a local supply voltage;
- a bias generation circuit;
- and
- a body bias circuit, to receive a supply voltage and a bias voltage from said bias generation circuit, said body bias circuit to generate a bias voltage referenced to said local supply voltage and to provide said bias voltage to at least a first transistor.
2 more elements
Dependencies are inferred from the claim text.