CURRENT/VOLTAGE CONVERSION CIRCUIT
PROBLEM TO BE SOLVED: To provide a current/voltage conversion circuit in which a broad band processing and improvement of conversion efficiency are compatible with each other. SOLUTION: A photodiode 4 as a current signal source is connected to an inverting input terminal (-) of a differential amplif...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a current/voltage conversion circuit in which a broad band processing and improvement of conversion efficiency are compatible with each other. SOLUTION: A photodiode 4 as a current signal source is connected to an inverting input terminal (-) of a differential amplifier 1 to which a feedback resistor R is connected and a current from the photodiode 4 is converted into a voltage by the feedback resistor R. The photodiode 4 is connected to the input terminal (-) via a current mirror circuit 5 whose output current is higher than an input current. |
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