Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Recent content by ammu1

  1. A

    Regarding Output impedance in unit element of DAC

    Hi, Iam design a unit element using switches and cascade transistors now am getting the output impedance at 1GHz frequency 108dB and SFDR 65dB . Iam attaching my design . How to improve output impedance in DAC in 65nm design at higher frequencies .using inductors or inverters or anyother...
  2. A

    fractional (N/N+1) divider for all digital phase locked loop

    Hi all iam doing fractional divider. i have attached figs. In that figs am unable to understand where should i give base band signal. Depends on the base band signal it should act N/N+1 divider, If base band signal low it will act divide by N and if base band signal high it will act like N+1...
  3. A

    Finding poles and zeros from TransferFunction

    HI barry sorry for inconvenience. Actually my circuit is like below By using small signal model i find the equations and after solving iam getting the output impedance. Finally iam getting the numerator and denominator shown as below Num= g_ds2 g_ds3 (-((-g_ds2 + g_m2)/g_ds3) + ((-s c_x -...
  4. A

    Finding poles and zeros from TransferFunction

    Hi, Thank u for reply and suggestions. But the below command is gives the transfer function when u know the coefficients. h = tf( [1] , [1 0]) I have transfer function like this V_s/J_s=[g_ds2 g_ds3 (-((-g_ds2 + g_m2)/g_ds3) + ((-s c_x - g_ds1 - g_ds2 + g_m2) (s c_y + g_ds2 + g_ds3...
  5. A

    Finding poles and zeros from TransferFunction

    Ya i tried like that only but its very difficult to find in my case. So am searching for any other method is available. Any suggestions ? Thanks
  6. A

    Finding poles and zeros from TransferFunction

    Hi, By using MATHEMATICA Tool i find pole and zeros but it giving very big equations. Is there any method to find pole zeros from the transfer function. I tried with different methods but am not understanding the results . Please any one tell the method to find pole zeros ...
  7. A

    Finding poles and zeros from TransferFunction

    Hi, I have a Transfer function like this V_s/J_s=[g_ds2 g_ds3 (-((-g_ds2 + g_m2)/g_ds3) + ((-s c_x - g_ds1 - g_ds2 + g_m2) (s c_y + g_ds2 + g_ds3 -g_m3))/(g_ds2 g_ds3)) ]/ [-g_ds2 (s C_L + g_ds3 + g_L) (-g_ds2 + g_m2) - (-s...
  8. A

    [SOLVED] Calculation of Poles and Zeros From output impedance

    I have a circuit like this **broken link removed** By using small signal model i found the 3 current equations The equations are I(t)=v(t)*(s*c(l)+g(l))+(v(t)-v(y))*g(ds(3))+g(m(3))*(-v(y)) -g(m(2))*v(x)+(v(y)-v(x)*g(ds(2))+v(y)*s*c(x)=-g(m(3))*v(y)+(v(t)-v(y))*g(ds(3))...
  9. A

    DAC (digital to analog converter)

    can anyone help me how to choose the transistor sizes for binaryweighted currentsteering dac with 65nm design. Iam atttaching my design**broken link removed**. Presently iam using the values srcwidth=cscwidth=swichwidth=10um srclength=csclength=switchlength=1um but iam getting the...
  10. A

    Current steering Binary weighted DAC

    can anyone help me how to choose the transistor sizes for binaryweighted currentsteering dac with 65nm design. Iam atttaching my design Presently iam using the values srcwidth=cscwidth=swichwidth=10um srclength=csclength=switchlength=1um but iam getting the outputimpedence at 100MHz -15dB it...
  11. A

    Current steering Binary weighted DAC

    Hi , iam new to matlab environment. Hw to start writing matlab code for current steering Binary weighted DAC.could u pls give any matlab code regarding dac's so i can understand easily.
  12. A

    Current steering Binary weighted DAC

    HI, Iam presently working on binary weighted dac using current sources . I am bit confused with design of DAC. Anyone can pls suggest hw to design in matlab.give any example matlab.
See more

Part and Inventory Search

Back
Top