Silicon Photomultiplier Sensor Interface Based on a Discrete Second Generation Voltage Conveyor.

Area of Science:

• Electronics
• Photonics
• Semiconductor Devices

Background:

• Silicon photomultipliers (SiPMs) are crucial for photon detection but require specialized electronic interfaces.
• Existing interfaces can be costly and bulky, limiting their use in portable systems.
• Discrete component designs offer potential for cost-effective and adaptable solutions.

Purpose of the Study:

• To design and evaluate a discrete second-generation voltage conveyor (VCII) for SiPM interfacing.
• To demonstrate the VCII's capability as a transimpedance amplifier suitable for photon detection.
• To assess the performance and suitability of the discrete VCII for portable applications.

Main Methods:

• Transistor-level design of a discrete second-generation voltage conveyor (VCII) using commercial components.
• Implementation of the VCII as a transimpedance amplifier circuit.
• Characterization of the circuit's performance, including bandwidth and input impedance driving capability.
• Evaluation of power requirements and physical dimensions.

Main Results:

• The designed discrete VCII functions effectively as a transimpedance amplifier for SiPMs.
• The interface circuit operates with a bias current of 20 mA and a dual 5V supply.
• A useful bandwidth of approximately 106 MHz was achieved.
• The design demonstrates capability to drive high input impedance, essential for photon detection.

Conclusions:

• The discrete second-generation voltage conveyor (VCII) is a viable and high-performing electronic interface for silicon photomultipliers.
• The developed circuit offers a cost-effective alternative to integrated circuits for portable photon detection applications.
• The design's performance, low power consumption, and compact size make it suitable for widespread adoption.