USPS delivered my Mouser order today. 100 pieces SA5534ADR plus 100 pieces SA5534AP. A lifetime buy.
Thanks, Mark. I tried a search, honest! (it's a part that comes up so often you get about a million hits)
The equivalent of the NE5534A is the NJM5534DD/MD - these are the versions with guaranteed-by-testing low noise performance. You try getting those!
Ah... That's not entirely true. Voltage noise is tested in production as noted in the data sheet. Keep in mind that the spec table in the data sheet is a binding agreement between TI and the customer. If a number is in the 'limit' or min/max column it is measured in production.
Current noise is not tested from what I can tell. If you're concerned with current noise, the LM4562 would not be your first choice anyway. The OPA1642 would be better, as mentioned earlier.
Tom
LOL <snort>
It does appear the NE5534, NE5534A, SA5534, and SA5534A are all on lifetime buy. At least that's what I see both at Mouser and TI.
TI refers to the TLV9361/9362/9364 as a replacement for the NE5534. It does indeed look like that family has even lower current noise but the voltage noise is a smidge higher.
Tom
If you want low voltage noise AND low current noise, the OPA210/OPA2210 and the older OPA209/OPA2209 might be an option. But yes, they are more expensive.
You didn't read footnote (4) - you don't get far in datasheet land by ignoring a footnote, the bad news is hidden there....
Which basically means its statistically sampled, not tested for every die.
There have been several threads here about how a significant proportion of LM4562's have abnormally high 1/f noise (with popcorn noise), again evidence that noise is not tested on every die (it takes maybe minutes to screen for 1/f noise so its a production expense they don't want to have)
https://www.diyaudio.com/community/...pcorn-noise-current-situation-in-2023.396751/
1/f noise and popcorn noise in bipolar devices are mostly current noise, which isn't guaranteed anyway for the LM4562. By the way, NE5534A noise is also sample tested (or at least it was when Philips made them).
https://www.digikey.com/en/products/detail/nisshinbo-micro-devices-inc/NJM5532M/805753
Can ship 8,666 units NJM5532M immediately from USA, smd pack.
So design your boards, use those until these too are declared EOL.
And:
https://www.digikey.com/en/products/detail/njr-corporation-njrc/NJM5534M/805755
Tells me that NJM is obsolete, but substitutes are available in decent quantities
Can ship 8,666 units NJM5532M immediately from USA, smd pack.
So design your boards, use those until these too are declared EOL.
And:
https://www.digikey.com/en/products/detail/njr-corporation-njrc/NJM5534M/805755
Tells me that NJM is obsolete, but substitutes are available in decent quantities
Ugh... Yeah. That's for pointing that out. There's been a big push in the industry to reduce cost by reducing testing. Guaranteed by design = guaranteed by simulation = cheap.
I'm quite aware of the popping corn LM4562. I've gone through a few reels of them now and have seen popcorn noise on occasion. Most of them have been well-behaved in my experience, though.
Tom
See the datasheet if you want to be sure, but as far as I know, the temperature range is the difference. Unfortunately, Mouser has all variants of SA5534 marked as "End of Life".
OPA1602 and OPA1612 are other options one could consider if the application is not too cost sensitive.