Patent ID: 6268765
Filing Date: 2001-07-31
Classification: H03H

Abstract:
A circuit, comprising:a first transconductor circuit having a first input terminal coupled to receive a voltage signal, having a second input terminal coupled to receive a control signal and having an output terminal, the first transconductor circuit having a gain responsive to the control signal;a first integrator circuit having an input terminal coupled to the first transconductor circuit output terminal and having an output terminal;a second transconductor circuit having an input terminal coupled to the first integrator circuit output terminal and having an output terminal; anda second integrator circuit having an input terminal coupled to the second transconductor circuit output terminal and having an output terminal,wherein one of the first and second integrator circuits further comprises:a source follower circuit having an input terminal coupled to a respective integrator circuit output terminal and having an output terminal; anda capacitor having a first terminal coupled to the respective integrator circuit input terminal and having a second terminal coupled to the respective source follower circuit output terminal.