Qualcomm Incorporated

Texas Instruments Corporation

Samiran Dasgupta

Devraj Matharampallil Rajagopal

Madhukar Vallabhaneni

Girish Koppassery

Amjath Husain

Abhay Shankar Gaikwad

An amplifier circuit includes an amplifier core having a cascode transistor and a gain transistor, a bias circuit coupled to the amplifier core, the bias circuit comprising: a first current source, a second current source, an operational transconductance amplifier (OTA), a bias cascode transistor pair having a bias cascode transistor and a bias gain transistor, and a replica circuit coupled to the first current source and to the second current source.

Circuit and method for biasing an amplifier

An IO circuit capable of high voltage signaling in a low voltage BiCMOS process. The IO circuit includes a voltage rail generator circuit that receives a reference voltage and generates a voltage rail supply. A BJT (bi-polar junction transistor) buffer circuit is coupled to the voltage rail generator circuit and a pad. The BJT buffer circuit includes a pull-up circuit and a pull-down circuit. The pull-up circuit receives the voltage rail supply. The pull-down circuit is coupled to the pull-up circuit. The pad is coupled to the pull-up circuit and the pull-down circuit.

Technique to realize high voltage IO driver in a low voltage BiCMOS process

Growing community of inventors

Bengaluru, India

Samiran Dasgupta