<div dir="ltr">Nice find. Yeah I knew the AD822 was also an opamp and definitely not this part.<div><br></div><div>MPS was a Motorola prefix.<br><div><br></div><div>MC</div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Feb 23, 2020 at 3:21 PM <<a href="mailto:rsdio@audiobanshee.com">rsdio@audiobanshee.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">I found a cross-reference that lists the AD822 with:<br>
<br>
INL (Mfr.) - IT130A and IT130<br>
MPS (Mfr.) - MP352<br>
<br>
See <a href="https://www.datasheetarchive.com/pdf/download.php?id=deec90cb7ef4e2f6182e101a57a5852fa2b8f6&type=M&term=AD821" rel="noreferrer" target="_blank">https://www.datasheetarchive.com/pdf/download.php?id=deec90cb7ef4e2f6182e101a57a5852fa2b8f6&type=M&term=AD821</a><br>
<br>
As you can see, I cheated by searching for the AD821 that you mentioned, and got lucky that the cross-reference lists both AD821 and AD822. I found some other listings that stopped with AD821 at the end of the page, and no way to access the next page in the catalog!<br>
<br>
Rectron makes a MP352 bridge rectifier. I don’t know who the “MPS” manufacturer is - maybe Monolithic Power Systems. I’m guessing that “INL” might be Intersil.<br>
<br>
Linear seems to have something called the IT130A.<br>
<br>
Take a look at <a href="https://html.alldatasheet.com/html-pdf/84182/LINEAR/IT130A/180/1/IT130A.html" rel="noreferrer" target="_blank">https://html.alldatasheet.com/html-pdf/84182/LINEAR/IT130A/180/1/IT130A.html</a><br>
<br>
<br>
On Feb 23, 2020, at 12:05 PM, <a href="mailto:rsdio@audiobanshee.com" target="_blank">rsdio@audiobanshee.com</a> wrote:<br>
> Based on your description, it is not the Analog Devices op-amp<br>
> <br>
> <a href="https://www.analog.com/en/products/ad822.html" rel="noreferrer" target="_blank">https://www.analog.com/en/products/ad822.html</a><br>
> <br>
> <br>
> On Feb 23, 2020, at 10:44 AM, Michael E Caloroso <<a href="mailto:mec.forumreader@gmail.com" target="_blank">mec.forumreader@gmail.com</a>> wrote:<br>
>> Years ago a lab at work had boxes of parts set out in the hall for<br>
>> disposal. One of the parts are AD822 in their original case marked<br>
>> "matched PNP pair". It's a<br>
>> <br>
>> Anybody have the datasheet for this part? I've never seen the AD822<br>
>> in a synth schematic and the AD821 is more common in expo converters.<br>
>> The net turns up nothing. They're in a TO-71 package with gold plated<br>
>> leads.<br>
> <br>
> <br>
</blockquote></div>