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Recent content by amr hema

  1. A

    i need switchable buffer

    ok got it thx :)
  2. A

    i need switchable buffer

    hi every one i am designing sar adc 26 Mhz and design input buffer as two stage ota with folded cascode as a core i wanna make my buffer switchable which work in the sampling phase and be off the rest of the clock to save power how can i make it ? can i switch on vdd i.e connect vdd in...
  3. A

    dft for sampling switch

    hi all, i have designed T.G switch with another dummy T.G for sampling switch , my clock is 20Mhz , i used it for sar adc 8-bit , so how can i measure snr and thd for this switch , how can i choose fin , Nrecord , Nwindow ?? please i am in deep need for answer :) thx in advance :)
  4. A

    coherent sampling for adc

    hi all, kindly, i make sar adc 8-bit and i wanna measure its dynamic performance to calculate ENOB , my max i/p frequency is 574K and fs=2Mhz i choose Nrecord=2048 and Nwindow=585 so fin=573.3K , is this true and what's exactly method to know i.p sinwave needed in fft? thx in advance
  5. A

    [SOLVED] proplem in verilog-a code

    i design sar adc and there is a proplem in sar logic code the command @(initial_step) saw the first command only (ex. see counter=0) and the other statement repeated in code and i want to make them initial only this is the code // VerilogA for try, try, veriloga `include "constants.vams"...
  6. A

    monte carlo for capacitor mismatch

    this error appear to me when i simulate capacitor with its voltage to get standard deviation i use capacitor equation C= I/(w*V) = I/(2*Pi*f*V)
  7. A

    monte carlo for capacitor mismatch

    AA, all how can i make monte carlo to get mismatch in capacitor , i need to know standard deviation and mean from histogram or from where?
  8. A

    reference voltage and capacitor values in ADC

    thanks alot :)
  9. A

    reference voltage and capacitor values in ADC

    ok but my graduation project is sar adc , and i want to know how to determine its value and value of full scale input
  10. A

    reference voltage and capacitor values in ADC

    hi all, how can i know the value of reference voltage of ADC and what's its effect ? also how to determine the value of unit capacitor in DAC in SAR ADC ?
  11. A

    i need an advice in adc plz

    thx alot :)
  12. A

    i need an advice in adc plz

    thx alot :)
  13. A

    i need an advice in adc plz

    hi , how r u all guys ? i am in my 4th year of electronics and in my graduation project i will make low power ADC , so i want your advice to me how to start? first i want to know about system of adc in general , so where can i start from and from what source? another question , when i start to...
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