Speakerguy
Active Member
OK, I just tried making a little triangle generator out on a solderless breadboard. I used the simple circuit found in the AN-31 app note (a pos feedback op amp tied into an inverting RC opamp thing).
Anyway, I tried it first with the bipolar NE5532 10MHz 9V/uS op amp. The peaks were noticeably rounded. I also tried the FET input OPA2132 8MHz 20V/uS op amp, and the peaks were much better.
Q: Why does the slower (8 vs 10MHz) opamp make better triangle waves, and why does the slower opamp have a higher slew rate?
Anyway, I tried it first with the bipolar NE5532 10MHz 9V/uS op amp. The peaks were noticeably rounded. I also tried the FET input OPA2132 8MHz 20V/uS op amp, and the peaks were much better.
Q: Why does the slower (8 vs 10MHz) opamp make better triangle waves, and why does the slower opamp have a higher slew rate?
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