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Hi,
I finally fixed this oscillation by replacing R1 by a 50ohm resistor. I can not tell why. Do you have only idea about this?
Thank you.
Added after 31 seconds:
Hi,
I finally fixed this oscillation by replacing R1 by a 50ohm resistor. I can not tell why. Do you have only idea about this...
Hi,
I has attach the PCB layout picture. There are 12 amplifier on it and each single amplifer layout is draw as the evluation board provide by AD. I think it is not very easy for read. The evluation board sheet have been attached. In addition, I terminated the input of the first stage by a RF...
Hi All, I am now using AD8099 for a low noise preamplifier, which is followed by a low pass filter for filtering out low frequency noise and DC created by the unbalance impedences between V+ and V-. For single stage very thing is fine. However when I cascade two stage, oscillation happens...
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