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design of Gm transconductor Cell

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Moustafa Khatib

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Hello,


I am new in this forum and this is my first post and I wish to get your advice .. currently I am designing a gm transconductor cell as in the attached figure .. I actually I don't know how from which point to start my design in order to get the device sizing, the specs that I have in this design is to make the gm cell very linear to get gm = 1/R and

I wish if I can get some guidance :)

4306005600_1433459643.png
 

Dominik Przyborowski

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Start from calculating transconductance of this cell, next assume some bias current and use well known drain current formulas
 

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