In, a transimpedance amplifier (TIA) is a to converter, almost exclusively implemented with one or more (opamps). The TIA can be used to amplify the current output of, photo multiplier tubes,, and other (that are modeled well as a ) into a usable voltage.
The board is available as a kit, or you can order it pre-configured to a specific impedance and attenuation value. The board creates a pad with a single value of attenuation.