 We have a great search brought to you by Digikey native for every single weekly data user power of engineering I'll be you you find things on digikey.com my data. What is the great search of the week and this a week? Okay? So this week for folks who remember like about a year ago. Yeah, it was a year ago We did the great search on getting high-powered infrared emitters Then we made this board that has a right angle and like a vertical and a horizontal emitter So that you can just blast IR for making like TV guns or infrared remote Mimikers or just you want to illuminate IR somewhere And this has been working great. I love this board. It's all good. But then We had a request from the internal team to make the opposite. I want to receive her something that receives infrared because we have these like remote We had these little doodads and they're wonderful and everything but they're really hard to mount and you have to like solder these little wires and like I mean they work great and everything but Folks wanted something that was like plug-and-play mountable Maybe even has a little LED to tell you that the signal was received a little debugging information so I This is not right angle, but this is a Design that I came up with So it has a white angle Receiver and a vertical receiver and then there's a switch to go between the two and the reason there's a switch Like why don't just tie them together is because they're push-pull and I don't want the outputs to fight each other If one's getting a slightly different signal, and I don't want them to corrupt the signal So you just decide did you want the you know vertical style or the horizontal style? Which is cool and everything But one thing about the these receiver modules These are like SMT versions of that through-hole is that they're fixed in their frequency the carrier frequency Which is like 99% of the time 38 kilohertz, but sometimes it isn't like some people have like remotes that are 50 kilohertz 40 kilohertz you know by 28 whatever and Even though these have a little bit of fluctuation They're not definitely not gonna go to 40 sorry to 45 or 56 like they're there's limitations And so I was reading about learning remote Receivers that are they don't do the full decoding, but they will give you the carrier signal Modulated so they'll just kind of they'll at least give you like the cleaned up They'll basically give you what you said to the IR LED With the the carrier wave in place you can determine what the frequency is and like there are situations I think that's gonna be really handy One when you want to get like the raw signal from the IR But also maybe you like you know, there's there are I think like programs for like Raspberry Pi or whatever that can do IR remote Learning so you can learn about the remote and then duplicate it or they're repeaters So I thought that could be an interesting and we actually had and you know as it was funny is like I love like when I research something and then like the one of the links is to learn and I'm like well So like Chris young did an infra Right He did Sorry, I'm gonna find where it is because there's a lot of remote projects This one so turned out he actually was using a TCMP learner chip because somebody linked to this so this was really cool I was like well, what what is a learner chip and then you like read the data sheet basically like I said It has a wide band of receiving so let's go to did you key and find a Wide band infrared receiver. So let's look for infrared Receiver I before e except after C guys. Okay, photo detectors about receivers So let's go to the category. Okay, 1342 and then what's nice is that I was like well like yeah Here's the center frequency. Remember I said like almost all them are 38 kilohertz But there are some that go above and some that go fairly low And then there was like you could there was one that you could select the center frequency and I was like bomb. I'm done Yeah, I was like this is gonna be the shortest Great search in the history of great searches. And then I was like, wow, there's even some in stock chip shortages over So I clicked on the TCMP 7 7 0 0 0 0 and I was like, this is really cool Because yeah, it will give you the modulated output That's their thing. They're like there's a little bit of delay, but they'll give you the modulated output It's good from you know a wide range of wavelengths does 840 and 940 and you know even up to like 1000 nanometers Easy pick-and-place part, but but but but it's no longer manufactured and not available But there are substitutes interesting is the substitutes did not show up here. So if you look There's only one Well, too, there's the TR version the TT version down here and like this one But there was no others. So what I did is I was like, well, okay, let me look at what's going on And I was like, well, there's like the TC as I go. There's TCMP 59 960 so there are a couple options Including one that was the through-hole version that was in that guy But then I was like looking at this and what I didn't understand was why what was all the differences? because if you search for and I had it like was 96 like the strength of the frequency and I didn't really want to Dictal the data sheets So what I ended up doing is I Found this document on Vishay And they'll make like the most infrared receivers like they they're kind of they kind of run they kind of run this place and Thank You Sebastian Schaefer who did a really nice job of explaining all the part numbers and this is like a great document I rarely see this where they really explain like what every number and letter means because then you know what you're searching for so The application and they're like, oh if it's TCMP That means it's a learning remote and I'm like great. That's exactly what I'm looking for And then they have this like icy type which you can ignore and then I was like, well, what is the 96? Like there's 96 95 90 whatever so the first number is the package and I don't know if they have the photos of the package. They don't have the photo But like all the different shapes are different. They have like different names for them Like Hamedal who's like a Norse God and Bellowbog which also sounds like a Norse God But I'm not sure and then like mold really mold cast so I guess like package information and then the auto game I'm assuming this is automatic gain circuitry. So it's like how it does gain detection and then the Frequency and so we want zero zero because there's no band pass. It's like it lets through anything within that frequency range So if we go back Well, let's actually search for TS MP right because we learned from this that anything that's TS MP will be a repeater or learner part and Let's Now look at active because like we've learned some are not available to supply and then You know, there's different sensing distances, but maybe that doesn't matter as I think they do have a center frequency, but like The categorization doesn't realize that the frequency is wide, you know, I mean, it's like there isn't the center is 38 But it's like it doesn't narrow band. It's a wide band. That's okay So a couple of different options. So it looks like all of them are like TS well, let's look at the ones that are just like normally stocking because there's only like a couple So there's 95 98 96 and Then another 98. This is 98 100 98 00 so let's look at it. So nine TS MP, sorry nine 96 Wait, that's what they said the package is But the package is different. I think oh nine. Sorry. This number is this nine. It's a silene. I see I Don't know. It means it must be some process thing that I've got so you're all silene's I think and then Nine six zero zero zero so they're fixed gain no learning. So Yeah, the number here Sorry, the first number is just the the CSIP means learning nine means the chip ID and then the next number is the package and then this one has a 100 in it and Looks like that has a slightly different Automatic gain, I guess. Well, we're not gonna pick the through hole one anyway, so let's pick the SMT Surface mount and then apply so the surface mount will have a lower Yes, they don't have as wide of a gain. They're only good for like two meters or so that's okay and then Looks like there's two versions. I actually tried to figure out like the real big difference between these but I like One is just a little bit smaller, but the game is about the same Um, but the price is a little different This one is a little bit cheaper in quantity this one's I don't know they're kind of like the same thing same frequency Let's see the issue. So, but they're both pretty good But I think I'm just gonna go with It's interesting. It's also this is five meters and this is two meters But I think I'm gonna go with the ninety six Thousand So, yeah, this looks kind of nice. I like that it runs from two to five volts and Yeah, it's very simple carrier output. So You just have to clean up the power supply and then when you get the signal out again You're gonna have to do your frequency counting to figure out what the the frequency is But I think it's gonna be interesting. So I'm gonna make a break out or one of these as well They have a vertical one nice thing about the Vichy parts is they have two versions There's the it's like the pins are they go around so there's a right angle version this one that sticks at the end and A vertical version you can see that sticks up. It just depends on how it comes on the tape anyways This is my pick for the great search That's the great search