Patent ID: 8421541
Filing Date: 2013-04-16
Classification: H03F

Abstract:
1. An apparatus comprising a single-ended-to-differential converter comprising: first and second input transistors, the gate of the first input transistor coupled to a single-ended voltage, the gate of the second input transistor coupled to an alternating current (AC) ground voltage, the first and second input transistors being biased by a main current; first and second cascode transistors coupled to the drains of the first and second input transistors, respectively; loading elements coupled to the drains of the first and second cascode transistors, the drains of the cascode transistors being coupled to a differential output voltage; and first and second cascomp transistors, the drains of the first and second cascomp transistors coupled to the drains of the second and first cascode transistors, respectively, the gate of the first cascomp transistor coupled to the single-ended voltage, the gate of the second cascomp transistor coupled to the AC ground voltage, the cascomp transistors being biased by an auxiliary current.