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Do you know any sites containing datasheets for smartphones? How to get them. I mean repairing service companies have to get them somehow. But I cannot find anything.
I'm interested in sensors datasheets- fingerprint sensors especially, but I can't even identify them(can't find their names).
So...
Maybe in later time I'll give FPGA a try, but for now I think I will stick to 74's. That DDS idea is only "for fun" so I'm not talking about I don't know big bit depth/resolution of this generator that's why cost of the 74 ICs won't be high because I won't need it much.
About FPGA only I knew...
Yeah I know about TTL's frequency. Ive seen that 74LVC can handle 250+MHz.
About PLD's I would have to buy development boards, learn to program it, etc. Too high cost for me now.
Thanks for help.
Well as I've mentioned I'm using 7400 ICs for now. I think FPGA is out of my range for now. I would like to build DDS capable of getting freqencies 0-100MHz. That's why I'm stuggled with that memory delay. When all of logic is done I plan to program maybe PIC or Atmega microcontroller. 7400 are...
Sorry for late reply, but I was unable to get to PC.
Could you provide me maybe a schematic or something which shows how that parallel memory is realised? I've been looking at google but couldn't find anything. How to connect multiple memories to work as you've mentioned?
Do I undersood this...
Hello!
I have a question about design in high frequency DDS genarators. It's about delay of a memory which contain lookup tables. I'm curious about how modern DDS signal generators deal with that delay of memory. I know that there are some adders/registers with can oparate at GHz's frequencies...
Hello!
I want to get around 120-150MHz in my oscillator. Unfortunatelly, I can't get frequencies above 70MHz. With that circuit attached I'm getting around 65MHz. Everytime I change coil or capacitors(tried many combinations of 60-200nH coils and 2p-68p capacitors). Can someone explain me, why I...
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