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I started my PI preamp. Wanted to try some new op amps. Hard wiring a msop package wasn't fun. Any suggestions would be appreciated. Had damped oscillation at decay end. Disconnected preamp and looked at diodes. Still had oscillation. Oscillation amplitude increases as I move my hand close to the coil. Stops if I touch power ground. I measure 197 uh and 1.7 Mhz resonance with my coil tester. The oscillation I'm getting is higher than coil resonance. Any suggestions why the oscillation and how to stop it other than holding my finger on power ground. My first time using spice for design. Fun and a lot quicker trying things and so far easier to make work. It doesn't oscillate.
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Put a 22 to 100 picofarad cap across feedback resistor .. It should stop your oscillations.
For msop experiments use something like this ...http://item.mobileweb.ebay.com.au/vi...d=181069889219
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