Hey guys, need to make this stable, I've subbed the NE5534's for a LME49990 they sounds great, but "I think" they're oscillating a little as they get "just" too hot to keep your finger on for a length of time.
Any ideas to make it more stable? They have high quiescent current 10mA for an opamp but these little smd opamps are running hot!
Cheers George
Any ideas to make it more stable? They have high quiescent current 10mA for an opamp but these little smd opamps are running hot!
Cheers George
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I know when I used SMD high speed opamps for the I/V and buffer stage on my Rotel 991, I had to solder them directly to the board, and add 100uf bypass caps to the power pins -> ground. That took care of the oscillation I was seeing.These were THS 4031 or 4032, and AD8599 for the buffer/SE-> balanced conversion.
Put some Oscons from the opamp rail pins to ground, helped a little "maybe" ambient is down about 8c today.
I can't see any HF oscillations on the 100meg Teck but they could be much higher.
Also with 10mA quiescent current, at 16v rails what would that feel like with your little finger right on the smd chip??
Cheers George
Cheers George
I can't see any HF oscillations on the 100meg Teck but they could be much higher.
Also with 10mA quiescent current, at 16v rails what would that feel like with your little finger right on the smd chip??
Cheers George
Cheers George