R8 parallel capacitor #22
Loading…
Reference in New Issue
No description provided.
Delete Branch "%!s(<nil>)"
Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?
Prototype was found with 160pF capacitor in parallel with R8. Find out why that capacitor was there and whether we should include it.
Doing a spice simulation on the circuit shows that this capacitor passes through high frequency components more than without. I think that should not be included. I do not know the original intention for this modification.
Point of Measurement:
Modulation Input is GND-ed
Frequency Response Curves (0-100MHz)
Without the capacitor connected:
With the capacitor connected:
I see, that makes sense. There was some work to increase the modulation bandwidth. I think the capacitor should be kept and its footprint added to the PCB.