Patent Number: 6,310,520

Title: High slew-rate operational amplifier architecture

Abstract: An amplifier architecture wherein a primary or main operational amplifier is combined with a secondary or auxiliary high power operational amplifier to maintain the charge on a large load capacitor which operates as voltage reference source for a high precision analog circuit module. The auxiliary amplifier is activated only during brief periods for which a very high slew rate is required. This is achieved by additionally including a control circuit which regulates the operation of the auxiliary amplifier so that it operates only during very short intervals of very high load while the main operational amplifier accommodates all other normal operating conditions.

Inventors: Walden; Robert W. (Bethlehem, PA)

Assignee: Agere Systems Guardian Corp.

International Classification: H03F 1/48 (20060101); H03F 1/02 (20060101); H03F 1/42 (20060101); H03F 003/68 (); H03F 003/45 ()

Expiration Date: 10/30/2018