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Recent content by omidrey

  1. O

    Request for hardware test

    Dear Cata , thanks for feedback . Indeed I did not write whole of this code , the main core of this code is related to a weblog called vhdldesign hosted on blogspot and I guess it is for indian engineers. However I have modified and added some parts such as clock division and seven segment...
  2. O

    Request for hardware test

    Dear Sir , thanks for giving me your time to write reply .. in fact I have synthesized this code on ISE 14.7 and it could be successfully synthesized without any error except two warnings related to putting the BTN0 , BTN1 into the sensitivity list of the process function , moreover I have set...
  3. O

    Request for hardware test

    for doing functional test I need to write test bench which I dont know how to do , that's why I requested some one do the hardware test for me. Why this code cannot be implemented on CPLD? can you explain more? I didn't get what you mean by pointing out my code. Those buttons are asynchronous...
  4. O

    Request for hardware test

    Dear All Good day to you , I have recently prepared one VHDL code for implementing a digital clock and because I don't have any CPLD IC and its programmer , I wonder if any one can test the below code for me and then feedback to me whether the code is correctly working or not List of Material...
  5. O

    Calculating output current in a pseudo current mirror circuit

    Hi dear FVM , sorry for replying late ... the purpose of inverted Mosfet: in fact a this is only a schematic symbol misunderstanding and as i asked from the professor, the Q1 is a normal nmos transistor. the purpose of that R2 is to causing current drainage so that the the Q2 transistor will...
  6. O

    Calculating output current in a pseudo current mirror circuit

    Hi Mr. Chaitung , yes that resistor is a parasitic resistor on the gate causing current drainage.
  7. O

    Calculating CMRR in a differential mosfet amplifier

    Dear all I wonder if you could help me to calculate the CMRR in the below circuit : thanks in advance
  8. O

    Calculating output current in a pseudo current mirror circuit

    thank you all for your answers and guidelines , as I studied Behzad Razavi CMOS design book , I have written one voltage division on R2 from Vref and then written one KVL in the loop between R2 and Vgs of the Q2 and finally calculated the current flowing through the Q2 , I don't know if it is...
  9. O

    Calculating output current in a pseudo current mirror circuit

    Dear All Recently I faced a problem in calculating the output current in a circuit which is similar to current mirror circuit. I wanted to ask for your ideas on how to solve this circuit problem . In this circuit we supposed Vdd as Vreference. the schematic is as below : thanks in advance...

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