I need a replacement part for the LMV821 - 5MHz, Low Voltage, Low Power, RRO, 5 MHz Op Amps. The LMV821 only comes in a SC70-5 and I need a DIP.
Any suggestions?
Any suggestions?
Hi SgtWookieFairchild Semiconductor has a pretty good parametric search engine as well.
Mouser.com also has a decent parametric search - and it's cross-vendor.
OK, just checkin'No, this is not an homework assignment. I'm trying to build a souped up ultrasonic range finder.
They sure come up with some intriguing ideas - and some really goofy ones, too!I found this circuit at:
http://www.edn.com/index.asp?layout=article&articleid=CA45965
Why not go with an LMV821? Just design a circuit board for it, and make provisions for the pads. The dimensions are right there in the datasheet. Then solder that bug right to the board!I thought I'd build and test it's performance, but I can't locate the LMV821 in a DIP package so I need an equivalent. I've searched the web, read a lot of data sheets, and found the TS1871 and the LM6132. Unfortunately, I don't know enough electronics to recognize what parameters are necessary for an equivalence for this application.
You can use an audio output transformer; 200 Ohms on one side, 8 on the other. Yes, it's a ratio of turns. Radio Shack doesn't stock a suitable transformer; the only one they carry is 1000:8. You could wind your own if you were ambitious or bored. Or you could buy one from someplace like Mouser or perhaps a salvage place or online auction for a couple of bucks.Secondarily, the schematic fails to identify T1 specifying only 200:8. I recognize the symbol for a transformer. Does the 200:8 represent a winding ratio? Does the 200 side connect to the transmitter? Can I buy this part or do I need to make it?
You supply the parameters you want to search for, and click "search"What is a parametric search?
In my mind, at least, there is some ambiguity on the 200:8. It could be either a turns ratio OR an impeadance ratio. IIRC the impedance ratio is the square of the turns ratio....
Secondarily, the schematic fails to identify T1 specifying only 200:8. I recognize the symbol for a transformer. Does the 200:8 represent a winding ratio? ...
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