4-Channel Sample and Hold Chip
This chip was designed by Dr. Sachin Namboodiri and Angsuman Roy. The chips purpose along with the PCB is meant to test for photon counting as there are two parts to the chip. A 64 stage wide-swing fast transient digitizer and a 4-channel sample and hold array, where for this research work the sample and hold array is what is being tested. Click this link here for more info on the layout (seen below) and organization of the chip.

   
4-Channel Sample and Hold PCB
A draft of a schematic designed by Angsuman Roy was given to me to design in DipTrace. The schematic is comprised of the chip supported by on-board components such as 5V regulators to power the chip and logic buffers. MMCX connectors to send machine code to the chip and male pin headers connected to different outputs and inputs in order to verify the operation of the chip using an oscilloscope. The schematic, PCB layout and more can be seen below.

Draft of schematic

Schematic in DipTrace

PCB Layout

Rendering from Oshpark

Fully Populated S&H PCB

Setup & Testing of PCB and Chip