Patent ID: 9223153
Filing Date: 2015-12-29
Classification: G02B,G02F,H03F,H03K,H04B

Abstract:
1. A method of generating an output signal switching between a second supply voltage and a first reference voltage, starting from an input signal switching between a first supply voltage and the first reference voltage using an amplifier, the amplifier having a first switch to be coupled to the first reference voltage and to be controlled by a delayed replica of the input signal, a second switch to be controlled by the first supply voltage and comprising a conduction terminal to define an output terminal, and an active load switch to be coupled between the output terminal and the second supply voltage and comprising a control terminal, the method comprising: generating an inverted replica of the input signal having a threshold voltage based upon a second reference voltage greater than the first supply voltage; controlling the first switch with the delayed replica of the input signal; controlling the second switch with the first supply voltage; and coupling the control node of the active load switch to at least one of the first reference voltage and the inverted replica of the input signal based upon on a level of the input signal.