Patent ID: 7538615
Filing Date: 2009-05-26
Classification: H03F

Abstract:
1. A differential feedback amplifier circuit with cross coupled capacitors, comprising: a differential amplifier, having a first input terminal, a second input terminal, a first output terminal, and a second output terminal; a source follower, having a first input terminal coupled to said first output terminal of said differential amplifier, a second input terminal coupled to said second output terminal of said differential amplifier, a first end current source gate, a second end current source gate, a first output terminal, and a second output terminal; a first resistor, coupled between said first output terminal of said source follower and said first input terminal of said differential amplifier; a second resistor, coupled between said second output terminal of said source follower and said second input terminal of said differential amplifier; a first capacitor, coupled between said first end current source gate of said source follower and said second input terminal of said source follower; and a second capacitor, coupled between said second end current source gate of said source follower and said first input terminal of said source follower.