AnsweredAssumed Answered

ADL5536 gain block oscillations

Question asked by Racediagnostics on Nov 30, 2015
Latest reply on Dec 11, 2015 by Racediagnostics

Hi, I need have implemented a test board with two ADL5536 gain blocks to achieve a signal gain of 40dB. Each individual amp works well, however when I link the two the board becomes unstable and oscillates at about 800MHz.

 

I have used 100nF input/output caps and a 470 nH inductor. Input voltage is 20mV pp.

 

Doers anyone have any suggestions.

Outcomes