Need LME49990 gain/phase plot

audio solutions

Other Parts Discussed in Thread: LME49990

Hello, could you supply the open loop gain / phase plot for the LME49990? It is missing in the datasheet. Ideally I would like to see absolute phase angle vs. frequency rather than phase shift or phase margin. Thanks.

over 12 years ago

0 John De Celles over 12 years ago

TI__Expert 3840 points

Hi,

Let me see what we can come up with for you.

Best Regards,

0 audio solutions over 12 years ago in reply to John De Celles

Prodigy 20 points

Thanks. I'm wrapping the chip in a 1x loop around an op amp wired as a 1x gain current buffer follower that has -20 degrees of shift through the audio band,up to -60 degrees at 100K. I need the phase shift to see where my total phase margin sits.

0 John Guy1 over 12 years ago in reply to audio solutions

Prodigy 100 points

I too was looking for this, as well as the CMRR v Freq graph.

0 Per-Anders Sjöström over 10 years ago in reply to John Guy1

Prodigy 250 points

I'm looking also for gain/phase plots? Have you forgot those in the datasheet?

0 Per-Anders Sjöström over 10 years ago in reply to John De Celles

Prodigy 250 points

Any progress?

0 Isaac Adams over 10 years ago in reply to John De Celles

Prodigy 10 points

I'm in the same boat as audio solutions - This looks like a great part, but if the phase isn't flat across the audio band, it might be terrible for my application regardless of excellent distortion/noise performance.

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Need LME49990 gain/phase plot