Patent ID: 6915083

Claim:
An improved infrared transceiver system comprising: a first sensor for detecting infrared signals incident thereon and converting said signals to an electrical current signal; a gain controller for amplifying said current signals; a voltage converter for converting said current signals into voltage signals; and a staged current amplifier in circuit between said gain controller and said voltage converter, said staged current amplifier comprised of at least two amplification stages, each of said stages amplifying said current signals, wherein said gain controller comprises a current mirror in operative connection with said staged current amplifier and further wherein said staged current amplifier comprises: a first transistor, said first transistor comprising a first drain and a first gate; a second transistor, said second transistor comprising a second source and a second drain, said second source being in circuit with said first drain; a third transistor, said third transistor comprising a third gate and a third source, said third gate being in circuit with said second drain; and a fourth transistor, said fourth transistor comprising a fourth drain and a fourth gate, said fourth drain in circuit with said fourth gate and said first gate.