Current steering Binary weighted DAC

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ammu1

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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.
 

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.
 

If you're not familiar with the Matlab environment, even if you had a code, it wouldn't be of any help to you. There are many online books and tutorials about Matlab. Spend some time reading.
 

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 is too low value.If i decrease the transistor sizes the output impedence is increases but region of transistors are in linear region.

anybody suggest the transistor sizes for improving the outputimpedence and also the transistors are in saturation region.
 

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