Patent ID: 6891357

Claim:
An integrated circuit including a reference current generator adapted to generate a plurality of reference currents, comprising: an operational amplifier coupled to receive, at a first polarity input, a reference voltage; a first transistor Q 1 having a biasing input coupled to an output of said operational amplifier and an output coupled in a first conduction path to a fixed potential through a first resistor R 1 , said output of said first transistor Qi further being coupled in a feedback path to a second polarity input of said operational amplifier; one or more second transistors Qi, each having a biasing input coupled to said output of said operational amplifier, a first output terminal, and a second output terminal, said first output terminal being coupled to said fixed potential through a respective second resistor Ri, and not being coupled as feedback to said operational amplifier, and said second output terminal conducting a respective reference current Isi for use in generating a second current mirrored from said respective reference current Isi, wherein said output of said operational amplifier is operable to maintain bias on each said first transistor Q 1 and each said second transistor Qi for each second transistor Qi to conduct said respective reference current Isi between said first output terminal and said second output terminal.