I was curious if anyone here had any experience with the AD ADA4899-1? It seems to be a very nice part but I haven't seen where anyone has used it or has opinions.
Thanks,
Hal
Thanks,
Hal
With the gain bandwidth product stability will be extremely layout-sensitive. Its also got quite a high current-noise knee frequency. And of course it doesn't run from +/-15V and has a large quiescent current draw. Given those limitations it will work very well, but there are cheaper chips that can do the same without those issues for audio.
It would be a great front end to an audio or FFT analyser though with ultra low distortion well above 20kHz.
It would be a great front end to an audio or FFT analyser though with ultra low distortion well above 20kHz.
Analog Devices has several really fast op-amps. I used the OPA847ID and ADA4817-1ARDZ once at work for an improvised measurement amplifier for a DAB LNA - that is, I designed and laid out the circuit, a colleague built and used it. I didn't get any complaints, so it must have worked well. Layout and decoupling are quite critical.
Edit: silly me, the OPA847ID was from Texas Instruments, only the ADA4817-1ARDZ from Analog Devices.
Edit: silly me, the OPA847ID was from Texas Instruments, only the ADA4817-1ARDZ from Analog Devices.
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Thanks all - your replies pretty much sum up my thoughts on the part, at least for audio frequencies, but I had thought to double check. I personally use them fairly often if for no other reason that I have a 1K+ reel of them and they are quite suitable for what I use them for (1+ MHz applications) but that is typically much different than ways used my the majority of those here. Thanks again!