Patent ID: 7994839
Filing Date: 2011-08-09
Classification: H03F,H03G

Abstract:
1. A level shifter configured to generate an output voltage having a shifted voltage level relative to an input voltage, the level shifter comprising: a first gain module having a first resistance, the first gain module configured to generate a first voltage based on the input voltage and the first resistance; a load module having a second resistance, the load module configured to generate a second voltage based on the first voltage and the second resistance; a second gain module having a third resistance, the second gain module configured to adjust one of an output driver configured to output the output voltage having the shifted voltage level based on the adjusted one of the first voltage and the second voltage, a bias module configured to i) receive the gain control signal and ii) generate a bias current for the second gain module, wherein a value of the bias current affects an amount that the output voltage is shifted relative to the input voltage, and wherein the gain control signal is configured to i) adjust a resistance value of the programmable resistor and ii) adjust the value of the bias current.