Signal amplification and shaping circuit

The module mainly uses three chips: OPA235 , TLV3501 and NE555 from Dezhou Company , to realize the functions of amplification, screening and shaping respectively.

This module can be matched with the SiPM readout circuit of the plastic flash front-end, providing high voltage and receiving signals to the readout circuit.

After that, it passes through the amplification module, which consists of two stages of amplification. The front stage is in the form of transimpedance amplification, which converts the current signal into a voltage signal and amplifies it; the latter stage is in the form of negative feedback, which amplifies the voltage signal of the front stage 10 times.

The identification of the identification module can be adjusted through the 0932 potentiometer, and the adjustment range is 0.5V-5V .

The shaping circuit is a monostable circuit composed of NE555 , which can be adjusted as needed by adjusting the top-adjustable 3296 potentiometer. The pulse width is adjustable from 10-1000us .