Patent ID: 7502719

Claim:
An error correction circuit for an analog integrated circuit having an input terminal and an output terminal, comprising: an undershoot correction circuit electrically coupled to detect an undershoot error in said analog integrated circuit, said undershoot correction circuit operable to improve the reaction time of said analog integrated circuit only when said undershoot error is detected at said output terminal; and an overshoot correction circuit electrically coupled to detect an overshoot error in said analog integrated circuit, said overshoot correction circuit operable to improve the reaction time of said analog integrated circuit only when said overshoot error is detected at said output terminal; wherein said undershoot correction circuit further comprises: an input stage circuit including an input terminal electrically coupled to detect said undershoot error at said output terminal of said analog integrated circuit; a differential stage circuit electrically coupled to said input terminal; and an output stage circuit electrically coupled to said differential stage circuit and to said analog integrated circuit, as soon as said undershoot error is detected, said differential stage circuit and said output stage circuit are activated to generate a corrective signal that improves the reaction time of said analog integrated circuit; wherein said input stage circuit comprises a high speed class AB buffer electrically coupled to a capacitor.