Patent ID: 6670851
Filing Date: 2003-12-30
Classification: H03F

Abstract:
A cascode amplifier integrated circuit with frequency compensation capability, the cascode amplifier integrated circuit comprising:an input bias terminal configured to receive a bias voltage; a power supply input terminal configured to receive a power supply voltage; an input signal terminal configured to receive an input voltage signal; an output signal terminal; a gain stage circuit configured to amplify the input voltage signal received at the input signal terminal to produce an amplified voltage signal; an output buffer stage circuit configured to receive the amplified voltage signal from the gain stage circuit, to increase the current of the received amplified voltage signal and to transmit the resultant amplified voltage signal with increased current to the output signal terminal as an amplified output voltage signal; and a resistance-capacitance (RC) series circuit configured to provide frequency compensation during operation of the cascade amplifier integrated circuit, the RC series circuit having a peaking bipolar transistor configured to provide a bipolar junction peaking capacitance between the output signal terminal and the gain stage circuit.