Hi Just a quick video to show you these two chips under the Olympus wafer microscope. These were sent in by you. thank you very much to the mailbag. These are actually RF test chips.

You can see they got engineering sample written on them, but their RF test chips from the research department at the Angstrom Laboratory in Sweden. So I though all my viewers from the Angstrom is anyone worked there let us know down below. Anyway, let's check them out. Let's put them under the microscope because normally these metal caps have been soldered on, but these ones haven't.

So tada what we can see right inside. Let's get in there with a real microscope and see what we can see. So let's have a look at this. You can see the bottom wires coming over as we bring it into focus.

Fantastic! This is a hundred times magnification, so you can see how the bond wires are just welded onto the pads ultrasonically welded on. there. you'll notice the different colored traces there. They're different oxide layers giving different colors and I'm not sure what that black blob is there.

That's obviously some sort of our contamination, but that's terrific, isn't it? I Love this though. it's a hundred times. Meg Let's go in a bit closer and see if we can make out some more detail and this our RF stuff. I've got to say check out all the right angles there.

All the electrons are just going to fly off the corners. There we go 200 times. Magnification. You can see that some of the lines cross each other obviously see those in there in the centre of the picture, obviously crossing so they're on different layers.

They're able to do that because of the the routing. Of course, if these were all just one metallic layer, you wouldn't be able to see anything. But obviously this is all our discreet RF transistor stuff by the looks of it. and 400 times magnification.

As we bring that in there, we go check it out. They've got like a central routing bus on there. Ah, and yeah, we look at some sort of well I don't know why they like match transistor arrays I Don't know, you'd have to know your semiconductor manufacturing geometry and all that sort of jazz. We've obviously got a central bus, but that's rather fascinating.

So I don't have any details on this at all. by the way. And there you go. You can see some of the elements on the side there.

I'm not sure what's going on the individual pin there. Obviously they got something something happening, but anyway, you can see the depth of field of the camera as I bring in focus like the top of that bond of wire there and go down to the die. Brilliant. And there's the bigger die so it's more of the same once again.

but one big central bus happening in there and I will not lose some separate elements over here. so no, does anyone know what they're doing? Obviously, they're broken up into their functional elements so whatever. RF stuff is going on here. I've got some larger jumpers going over there over the main bus.

Look at that. that's obviously one functional block there. and then these are other functional blocks and very bus like I Didn't expect to see such bus like our configuration in an RF test chip. SWV AMS SWV What's that? I'm not sure.

it doesn't seem to any other graffiti and you have a graphics on here. nobody's left. their calling card Aha 1996 vintage Nordic is that for Nordic Semiconductor real VLSI very large scale integrated circuit is on the end of it. Hmm.

eh. d3 you? whatever. that is interesting. Anyone know? check out as I bring the different layers into focus I'm only going mainly turning that about two microns, not even probably 1 micron.

My dial is actually calibrated in microns, but I can bring you can see the physical layers I can bring them into focus and out of focus. That's the shallow depth-of-field of this camera doing that. and there's about like a micron layer difference, not even between those layers. That's terrific.

So there you go. I Hope you enjoyed that quick look at some RF test chips that are something to do with Nordic Semiconductor perhaps. And if anyone's got any details, please let us know. But thank you very much you you for sending those in back to a hundred Times mag.

Swede I Love the colors. catch you next time you.