| 摘要 |
Circuits and methods are provided for producing a rail-to-rail output voltage. A circuit includes a level shifter, a source follower, and a current compensation circuit. The level shifter receives an input signal and applies a compensation voltage to the input signal relative to a voltage level of the input signal in steady-state. The source follower produces an output signal and, responsive to variations in the voltage level of the input signal, changes the voltage level of the output signal using a biasing current. The current compensation circuit, responsive to a difference between the voltage levels of the input and output signals, varies an amount of the biasing current.
|
