Patent ID: 6052027
Filing Date: 2000-04-18
Classification: H03F

Abstract:
An amplifier comprising:an input coupled to an input stage;an output coupled to an output stage;an output error correction stage coupled to an output of said input stage;an output of the output error correction stage being coupled to an input of said output stage;said output error correction stage including a first high open loop gain amplifier including a transistor comprising an active amplifying component;a first negative feedback path coupled to an output of the output stage and an input of said first high open loop gain amplifier;a second negative feedback path coupled between the output and input of said first high open loop gain amplifier;said second negative feedback path including at least one capacitor;said second negative feedback path forming a first local dominant pole;an output of said input stage being coupled to an input of said high open loop gain amplifier; anda power supply having an input coupled to said output stage and an output coupled to said active amplifying component; wherebythe power supply output voltage substantially follows the output voltage of said output stage.