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Craig Sawyers · 18th Mar 2020, 10:41 am

I'd forgotten about the OPA1611. That is one spectacular opamp. With distortion products at the -136dB level, why go discrete? Although a paper in the AES a couple of years ago by Groner and Polak used two opamps in a particularly cunning way to get distortion down to -180dB.

I hear it on the grapevine that TI are about to release a range of ultra high performance audio op-amps. They have really got the bit between their teeth.

They guy who runs this at TI has a thread on here on their latest FET opamp https://www.diyaudio.com/forums/vend...io-op-amp.html . That particular device is not suitable for the low distortion oscillator (too noisy), but TI is very very active in this area.

18th Mar 2020, 10:41 am	#8
Craig Sawyers Dekatron Join Date: Nov 2010 Location: Oxford, UK. Posts: 4,998	Re: Low distortion oscillator I'd forgotten about the OPA1611. That is one spectacular opamp. With distortion products at the -136dB level, why go discrete? Although a paper in the AES a couple of years ago by Groner and Polak used two opamps in a particularly cunning way to get distortion down to -180dB. I hear it on the grapevine that TI are about to release a range of ultra high performance audio op-amps. They have really got the bit between their teeth. They guy who runs this at TI has a thread on here on their latest FET opamp https://www.diyaudio.com/forums/vend...io-op-amp.html . That particular device is not suitable for the low distortion oscillator (too noisy), but TI is very very active in this area.