TRANSIMPEDANCE CONVERTER OF SIGNALS OF AVALANCHE PHOTODETECTORS AND SILICON PHOTOMULTIPLIERS Russian patent published in 2014 - IPC H03F3/08 

FIELD: radio engineering, communication.

SUBSTANCE: transimpedance converter of signals of avalanche photodetectors and silicon photomultipliers comprises a current signal source (1), connected to the current input of the device (2) and the emitter of an input transistor (3), a current-stabilising two-terminal element (4), connected between the emitter of the input transistor (3) and the first (5) power supply bus, a first (6) auxiliary voltage source, connected to the base of the input transistor (3), a second (7) auxiliary voltage source, connected to the base of an output transistor (8), the emitter of which is connected to the collector of the input transistor (3), a collector load two-terminal element (9), connected between the collector of the output transistor (8) and a second (10) power supply bus, a buffer amplifier (11), the input of which is connected to the collector of the output transistor (8), and the output is the output of the device (12). The output of the device (12) is connected to the emitter of the output transistor 8 through a balancing capacitor (13).

EFFECT: wider operating frequency range.

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