Patent attributes
A transimpedance amplifier circuit includes a single-input amplifier that converts a current signal into a voltage signal, a control current circuit that generates a control current based on the voltage signal and a reference voltage signal, and a bypass circuit. The bypass circuit includes a control circuit configured to receive the control current, a feedback current source configured to generate a direct current (DC) bypass current, and a variable resistance circuit configured to generate an alternating current (AC) bypass current. The control circuit includes a first current mirror circuit that varies the DC bypass current via the feedback current source in accordance with the control current, and a second current mirror circuit that varies the AC bypass current via the variable resistance circuit in accordance with the control current and an offset current.
