Other Parts Discussed in Thread: DEM-OPA-SOT-1A,
Dear all,
here is my schematic
my PCB design is close to DEM-OPA-SOT-1A
Input is a photomultiplier tube . its parasite capacitance i estimate is 20-30pF ,and so i choose C5=0.25pF.
Oscillation problem:
![](/resized-image/__size/320x146/__key/communityserver-discussions-components-files/52/_AE5FE14FFE5647725F00_20221130095714.jpg)
![](/resized-image/__size/285x237/__key/communityserver-discussions-components-files/52/5342._2A62FE56_.png)
![](/resized-image/__size/315x145/__key/communityserver-discussions-components-files/52/_AE5FE14FFE5647725F00_20221130095701.jpg)