Semiconductor amplifier circuit
AssigneeFujitsu Quantum Devices Limited
InventorShigemi Miyazawa
Life of this patent
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Abstract
A semiconductor amplifier circuit comprises a transimpedance amplifier for amplifying an input signal; a by-pass transistor connected between an input terminal of the transimpedance amplifier and the ground potential; a first resistor, one end of the first resistor being connected to an output terminal of the transimpedance amplifier; a capacitor connected between the other end of the first resistor and the ground potential; a second resistor connected between the other end of the first resistor and the gate of the by-pass transistor via an inverter; and a differential amplifier having a signal input terminal connected to the output terminal of the transimpedance amplifier and a reference-voltage input terminal connected to the other end of the first resistor.
Claims4
A semiconductor amplifier circuit comprising:
- a transimpedance amplifier for amplifying an input signal;
- a by-pass transistor connected between an input terminal of the transimpedance amplifier and the ground potential;
- a first resistor, one end of the first resistor being connected to an output terminal of the transimpedance amplifier;
- a capacitor connected between the other end of the first resistor and the ground potential;
- a second resistor connected between the other end of the first resistor and the gate of the by-pass transistor via an inverter;
- and
- a differential amplifier having a signal input terminal connected to the output terminal of the transimpedance amplifier and a reference-voltage input terminal connected to the other end of the first resistor.
Dependencies are inferred from the claim text.