Patent ID: 7656145

Claim:
A voltage reference generator for providing a predetermined voltage reference, comprising: a voltage regulator coupled to an external power supply for generating a regulated voltage source comprising an input node; a bandgap voltage circuit comprising: a first transistor coupled to said regulated voltage source; a first resistor coupled to said first transistor; a second transistor coupled to said first resistor, said first transistor and said regulated voltage source so as to generate a voltage difference between the base-to-emitter voltage of said first transistor and the base-to-emitter voltage of said second transistor; and a second resistor coupled to said first resistor and said first transistor for generating said predetermined voltage in response to said voltage difference; and an amplifier circuit coupled to said second transistor of said bandgap voltage circuit for receiving a first amplifying signal so as to generate an amplified signal in response to said first amplifying signal, wherein said amplified signal is transmitted to said input node of said voltage regulator to regulate said regulated voltage source.