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Recent content by Korawy

  1. K

    FM transmitter and Reciever

    Thanks Externet.. What I understand is that The circuit I attached will use audio input which is about (0.3-3.4 KHz) and this will modulate the oscillation frequency of the LC Tank circuit to the MHz band.. and For the FSK Modulator the input is a digital data (1 and 0) and then the FSK...
  2. K

    FM transmitter and Reciever

    Hi all, Im looking forward to building an FM transmitter and reciever. I have built FM transmitter with LPF and it works well with a good range, and now im trying to build FM Reciever, But I have little knowledge of communication protocols and In fact I will develop the project to send digital...
  3. K

    Equivalent Level Shifters ICs

    Hi freebird The data rate the atmega can operate at is 16 MHz , The 80 MHz is the max data rate the MAX3375 can handle, So the data rate that will operate is at 16 MHz Thanks
  4. K

    Equivalent Level Shifters ICs

    d123.. You are welcome Klaus For Voltage divider, What's the max rate of data it can handle ?! Also the Max has three-state pin which protect against thermal short-cut, I dont know why he uses that pin, It's just UART Connection!! Thank you
  5. K

    Equivalent Level Shifters ICs

    Hi d123 I saw in a different topic that a voltage divider circuit may act like an RC Filter that will affect the rise and fall time of the signal, Im searching now for level shifter that have dir pins . Thanks
  6. K

    Equivalent Level Shifters ICs

    Hi again I have another question...the level shifter max3375eeka+t is a very small package (0.5 pitch), I know it can be replaced by txb0104, but instead Can I use a voltage divider circuit?, The max3375eeka+t is a unidirection level shifter that is used for UART Connections between atmega (5V)...
  7. K

    Equivalent Level Shifters ICs

    Thank you ads-ee After some digging I found the link you post, In Fact I had to know the packages and its pitch pins so as to decide if this IC will be ok for me as soon as I see the first page in the datasheet. However In youtube I found it's very easy to solder the TSSOP Package (0.65 pitch)...
  8. K

    Equivalent Level Shifters ICs

    Hi ads-ee That's an excellent equivalent .. the problem is it has a very small pitch pin (around 0.7mm for txb0104) but I have no experience in soldering such small ICs in addition that I will use a basic soldering unit (not hot air). Thanks
  9. K

    Equivalent Level Shifters ICs

    Yes it's a special condition where data can be in both ways, but I think I should do some digging to find out if there are ICs that uses no direction pins !! Thanks
  10. K

    Equivalent Level Shifters ICs

    Those Data rates are maximum rates the ICs can handle and thus it can operate the both sides whatever their data rates. Again I forgot to tell that the programming not through the Level shifter.. In fact the ICSP Pins are directly connected to the atmega and also to the level shifter but not to...
  11. K

    Equivalent Level Shifters ICs

    Hi KlausST Yes I know that Level shifters are for transforming signals and you have to supply it with the two power supplies from the two devices, sorry if I type that in a wrong manner. The Scheamtics I have (Arduino Yun)are using those ICs to do the Level Shifting as follows...
  12. K

    Equivalent Level Shifters ICs

    Thank you.. I will check them
  13. K

    Equivalent Level Shifters ICs

    Hi ALL Im working on a project that uses communications between atmega32 and an atheros based module, So there must be Level shifting between the two sides (from 5 to 3.3 or 2.5), The schematics I have is using NTB102, NTB104 and MAX3375EEK as Level Shifters. Im asking about equivalent ICs as...
  14. K

    Full Isolation of micrcontroller

    Thanks ftsolution, ur Posts is very helpful. Unfortunately the H-bridge and the PIC micro are all on the same circuit. Talking about the ground and power planes, im using only one layer for the Connections (not upper and lower layers),Is this making a problem for me, Or it's better to use two...
  15. K

    Full Isolation of micrcontroller

    Does this mean to use a PCB with two different types of copper, Or it just means the width of the Traces in a PCB??! and what's meant by "EMI suppression 'bead' inductors to add high frequency impedance "? But For SOME MAIN reasons, the Optical isolation must be made and if that then the...
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