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US 11,121,712 B1Granted
Level shifters with variably adjusted control voltage and for reading memory cells
AssigneeInfineon Technologies AG
InventorsLeonardo Castro, Rainer Bartenschlager
Life of this patent
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Abstract
A level shifter device comprises a first stage level shifter configured to transform an input signal to a first output signal having a voltage between at least one of a VPS control voltage and a ground or a VDD supply voltage and a VNS control voltage. The level shifter device comprises a second stage level shifter arranged subsequent to the first stage level shifter and configured to transform the first output signal to a second output signal having a voltage between the ground and the VDD supply voltage.
Claims25
A level shifter device, comprising:
- a first stage level shifter configured to transform an input signal, from a bitline connected to at least one memory cell of a memory device, to a first output signal having a voltage between at least one of a VPS control voltage and a ground or a VDD supply voltage and a VNS control voltage;
- and
- a second stage level shifter arranged subsequent to the first stage level shifter and configured to transform the first output signal to a second output signal having a voltage between the ground and the VDD supply voltage.
A level shifter device, comprising:
- a first stage level shifter configured to transform an input signal to a first output signal having a voltage between at least one of a VPS control voltage and a ground or a VDD supply voltage and a VNS control voltage;
- and
- a second stage level shifter arranged subsequent to the first stage level shifter and configured to transform the first output signal to a second output signal having a voltage between the ground and the VDD supply voltage, wherein at least one of the VPS control voltage or the VNS control voltage is variably adjusted.
A method, comprising:
- controlling a first stage level shifter to transform an input signal to output a first output signal having a voltage between at least one of a VPS control voltage and a ground or a VDD supply voltage and a VNS control voltage;
- and
- controlling a second stage level shifter, arranged subsequent to the first stage level shifter, to transform the first output signal to a second output signal having a voltage between the ground and the VDD supply voltage.
Dependencies are inferred from the claim text.