OPAMP tests into a 2k7 load
These are some THD tests I performed of various OPAMPS into a 2.7k load.
Measurement parameters:
PSU: 15-0-15
Gain: 2.2
Output: 2.7V RMS
Load: 2.7k ohms
Click on the image for a larger version.
NOTE: "ML" = measurement limit for my setup.
| OPAMP | THD | Notes |
|---|---|---|
| AD712JN | 0.00041% | |
| AD746JN | 0.00022% | |
| AD827JN | 0.00036% | |
| LM4562NA | 0.00016% | ML |
| LT1358 | 0.00042% | |
| NE5532N | 0.00020% | Make forgotten! | NJM2043DD | 0.00016% | ML |
| NJM2068DD | 0.00020% | |
| NJM2114D | 0.00026% | NJM4558D | 0.00059% |
| NJM4565DD | 0.00025% | |
| NJM4580DD | 0.00017% | |
| OPA2111KP | 0.00222% | Note bad harmonics |
| OPA2134PA | 0.00085% | |
| OPA2604AU | 0.00017% | |
| NE5532N | 0.00024% | |
| NE5532 | 0.00016% | ML |
| NE5532 | 0.00020% | Signetics |
| TL072CP | 0.00152% |
Click the images for a larger view
