Patent ID: 7342435
Filing Date: 2008-03-11
Classification: H01L

Abstract:
1. An apparatus comprising a level shifter connectable to a signal input for receiving an input signal with a negative signal swing, said level shifter providing for a DC shift of said input signal to provide an output signal with positive signal swing, said level shifter comprising: an amplifier having a first input, a second input, and an output, a first capacitor, a second capacitor, a reference voltage supply, and a transistor serving as a switch, wherein said first capacitor is arranged between said signal input and said first input, said second capacitor is arranged in a feedback-loop between the output and said first input, said reference voltage supply is connectable to said second input, and wherein said transistor is arranged in a branch that bridges the second capacitor, whereby a control signal is applicable to a gate of said transistor in order to allow the level shifter to be reset from time to time.