Ams International Ag

Ams Sensors Singapore Pte. Ltd.

Charalambos Andreou

Fridolin Michel

Massimo Rigo

Matthias Steiner

Juan Miguel Gavillero

A front-end electronic circuitry for an electromagnetic radiation sensor application includes a signal shaper circuit with an amplifier circuit and an active dynamic feedback circuit, the active dynamic feedback circuit being arranged in a feedback path of the signal shaper circuit. The active dynamic feedback circuit includes a first input transistor being arranged in a first current path of the active dynamic feedback circuit, and a second input transistor being arranged in a second current path of the active dynamic feedback circuit. The first input transistor has a control node to receive an output signal of the signal shaper circuit, and the second input transistor has a control node to receive a reference signal. The active dynamic feedback circuit includes a buffer circuit being arranged to decouple the first and second current path.

Front-end electronic circuitry for an electromagnetic radiation sensor application

A front-end electronic circuitry for an electromagnetic radiation sensor application comprises a charge sensitive amplifier stage with a first single-input operational transconductance amplifier, and a transistor being arranged in a first feedback path of the first single-input operational transconductance amplifier, and a signal shaper stage with a second single-input operational transconductance amplifier, and an active feedback circuit being arranged in a second feedback path of the second single-input operational transconductance amplifier. The front-end electronic circuitry further comprises a control circuit having a second transistor. The control circuit is configured to provide a control signal to control the transistor of the first feedback path in dependence on a gate-source voltage of the second transistor.

A front-end electronic circuitry for a photon counting application includes a charge sensitive amplifier including an amplifier circuit and a capacitor being arranged in a feedback path between the input side and the output side of the amplifier circuit. A controllable switch is arranged in parallel to the capacitor. The circuitry includes a delay circuit to provide a delay circuit output signal being a time-delayed representation of the charge sensitive amplifier output signal. An output signal generation circuit is configured to generate the output signal by subtracting the delay circuit output signal from the charge sensitive amplifier output signal.

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Charalambos Andreou