Patent ID: 6373297
Filing Date: 2002-04-16
Classification: H03K

Abstract:
An input buffer for amplifying a buffer input signal and generating a buffer output signal, comprising:a first direct-current (DC) voltage controller for generating a first alternating current (AC) signal having AC voltage components of the buffer input signal reflected thereon; a second DC voltage controller for generating a second AC signal having AC voltage components of the buffer input signal reflected thereon; a first driver for providing the buffer output signal the voltage level of which is driven to a first level in response to the first AC signal; and a second driver for providing the buffer output signal at a voltage that is driven to a second level in response to the first AC signal, wherein the first DC voltage controller includes a first control transistor formed between the first AC signal and a power supply voltage and gated by the first AC signal, and a first current source formed, between the first AC signal and a ground voltage, for controlling the amount of current through the first control transistor; and wherein the second DC voltage controller includes a second control transistor formed between the second AC signal and a ground voltage and gated by the second AC signal, and a second current source, formed between the second AC signal and the power supply voltage, for controlling the amount of current through the second control transistor.