Patent ID: 7019589

Claim:
A transimpedance amplifier comprising: a first amplifier having an inverting input, a non-inverting input and an output; a first MOS resistor device having a drain terminal, a source terminal and a gate terminal, said source terminal begin coupled to said first amplifier inverting input; a first voltage divider circuit coupled between said first amplifier output and said first amplifier non-inverting input and having an output coupled to said first MOS resistor device drain terminal; a second amplifier having an inverting input, a non-inverting input and an output, said output being coupled to said gate terminal of said first MOS resistor device; a second MOS resistor device having a drain terminal, a source terminal and a gate terminal, said gate terminal coupled to said second amplified output, and said drain terminal coupled to said second amplifier non-inverting input; a second voltage divider circuit coupled between said first amplifier output and said second MOS resistor device source terminal, and having an output coupled to said second amplifier inverting input; and a resistor coupled between said first amplifier output and said second MOS resistor device drain terminal.