US 11,777,500 B2 · NBTI protection for differential pairs

Abstract

In examples, a system includes a differential input device having a first input and a second input. The system includes a window generator configured to output, at a first output, a first voltage above a reference voltage and a second voltage, at a second output, below the reference voltage. The system includes a multiplexer coupled to the first output and the second output, the multiplexer configured to receive the first voltage, the second voltage, and an input voltage. The system includes a selector coupled to the multiplexer and configured to select the first voltage, the second voltage, or the input voltage based on a value of the input voltage, where the selector is configured to cause the multiplexer to provide the selected voltage to the first input of the differential input device, where a voltage source provides the reference voltage to the second input of the differential input device.

Claims17

Dependent claims

A system having a system input configured to receive an input voltage, comprising:

a first p-channel transistor having a first gate;
a second p-channel transistor having a second gate adapted to be coupled to a reference voltage;
a window generator having a window generator input coupled to the system input and having a window generator output coupled to the first gate, the window generator operable to output at the window generator output a first voltage if the input voltage is greater than a first threshold voltage and operable to output at the window generator output a second voltage if the input voltage is less than a second threshold voltage;
and
wherein the first voltage is less than or equal to the first threshold voltage and the second voltage is greater than or equal to the second threshold voltage.

2 more elements

Dependencies are inferred from the claim text.

NBTI protection for differential pairs

Life of this patent

NBTI protection for differential pairs

Life of this patent

Abstract

Claims17