Patent ID: 6853838
Filing Date: 2005-02-08
Classification: H03F

Abstract:
1. A single-ended input differential pair amplifier stage comprising: a first p-n-p transistor having a base terminal coupled to an input voltage; a first load impedance having a first terminal coupled to a ground reference and a second terminal coupled to a collector of said first p-n-p transistor; a second p-n-p transistor having a base terminal coupled to said ground reference; a second load impedance having a first terminal coupled to said power supply and a second terminal coupled to a collector of said second p-n-p transistor; an inductor having a first terminal coupled to an emitter of said first p-n-p transistor and a second terminal coupled to an emitter of said second p-n-p transistor; and a constant current source coupled to said emitter of said second p-n-p transistor.