- Nov 5, 2018
- Calgary, Canada
Taking into consideration the differences in open loop gain, it suggests that the actual open loop distortion of the 1612 is about an order of magnitude lower than that of the NE5532, and about 2 when the additional GBW is taken into account.
When comparing THD+N for opamps, always look at Rload. Many deliver excellent performance with Rload = 10 kΩ. Driving an open circuit is easy. Some are good at 2 kΩ. I seem to recall the OPA1611 being good down to 600 Ω as well.