AD40328 has anyone got any info on this op-amp?

[jez]

Anyone have a datasheet for this op-amp made from pure unobtainium?
Google draws a blank.... just various far east companies claiming to be able to get one, non of which has a data sheet or price.... very dubious.
Just want data on it, not IC itself as can probably find something to replace it with if I can get data for it!

 

[lineup]

Could have been AD4032B or AD40328
But neither can be found by me.
Haven't heard of it.

 

[jez]

It's AD40328 for sure. No I've never heard of it either but it does exist cos there's 3 of them in the Bruel & Kjaer 2610 measuring amplifier I'm trying to repair!

 

[lineup]

I did a search at Analog Devices website.
Analog Devices | Semiconductors and Signal Processing ICs
But no luck. Even there.

 

[jez]

erm....yes... I did say it's not to be found on the web....

 

[jez]

dated 1980 and in T099 metal can if that helps anyones memory !

 

[mlloyd1]

i suspect the last digit is not an 8.

how about this ic: Qservice Electronics, Fluke Spare Parts For Test Equipment scroll down to
AD40323

it can be a part specially marked/selected by ADI for someone. if so, good luck finding info ...

mlloyd1

 

[jez]

oh it's an 8 alright.... have looked very carefully through a large magnifying glass at all 3 of them and yep, no doubt it's an 8.
Looks like it will remain a mystery op-amp!

 

[davebullock]

AD40328

Hi B&KMeasuring Amplifier owners....
Looks like it's a B+K part number.

The actual IC is an LM201AH.
Slghtly less rare than unobtanium.
I just replaced all my AD40328's with the aforementioned IC and the performance is great and up to B+K specification.
Hope this helps other B+K owners.
Dave