Systems and methods for adjusting threshold voltage
View Patent ↗Systems and methods for adjusting threshold voltage. A threshold voltage of a transistor of an integrated circuit is measured. A bias voltage, which when applied to a body well of the transistor corrects a difference between the threshold voltage and a desired threshold voltage for the transistor, is determined. The bias voltage is encoded into non-volatile storage on the integrated circuit. The non-volatile storage can be digital and/or analog.
1. A method comprising:
accessing a bias voltage representation from non-volatile storage of an integrated circuit;
generating a bias voltage corresponding to said bias voltage representation; and
applying said bias voltage to a body biasing well of said integrated circuit.
2. The method of claim 1 wherein said generating is performed on said integrated circuit.
3. The method of claim 1 wherein said accessing is performed substantially by hardware.
4. The method of claim 1 wherein said accessing is performed under software control.
5. The method of claim 1 wherein said bias voltage representation is analog.
6. The method of claim 1 wherein said bias voltage representation is digital.
7. The method of claim 6 wherein said applying comprises coupling said bias voltage from a source external to said integrated circuit.
8. A method comprising:
accessing a voltage representation from non-volatile storage of an integrated circuit;
generating a voltage corresponding to said voltage representation; and
applying said voltage to a body well of said integrated circuit to achieve a desired threshold voltage.
9. The method of claim 8 wherein said voltage representation comprises a digital representation of said voltage.