How to calculate width of metal that is between a pad and a block

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Jushoraj

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Assume a pad and a block is placed 1mm apart from each other. If they are connected together by metal M1 carrying a current of 100mA, What will be the width of M1.
I need the total solution. Can any one help me to solve this out?
 

Re: Analog layout: Solve

You can use the EM check tool in cadence and find out what should be the width required to carry 100mA through M1 of length L..
 

Re: Analog layout: Solve

Jushoraj said:
I need the total solution. Can any one help me to solve this out?
Click to expand...

W = L*RA * I / Vdrop

W = width [µm]
L = length [µm]
RA = area-resistance [Ω/◻]
I = current [mA]
Vdrop = acceptable voltage drop [mV]

Your(?) example: L=1000µm ; RA(M1) ≈ 0.1[Ω/◻] ; I=100mA ; Vdrop = 100mV

W = ... = 1000 * 0.1 = 100µm
 
Re: Analog layout: Solve


Really thank you for your reply......
 

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