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Design >> Mixed-Signal Design >> Maximum on-chip variation in temperature for SOC
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Message started by cmos.analogvala on Jun 11^th, 2009, 11:19pm

Title: Maximum on-chip variation in temperature for SOC
Post by cmos.analogvala on Jun 11^th, 2009, 11:19pm

What is the maximum variation in temperature of two IPs on a system on chip ?

It wud be great if someone can proveide reference for this ?

-CA

Title: Re: Maximum on-chip variation in temperature for SOC
Post by vivkr on Jun 12^th, 2009, 12:05am

Hi,

I do not believe that there is any standard answer possible for that. Are you speaking of 2 different copies of the same circuit placed on a chip or 2 completely different kind of circuits?

The temperature depends on several factors like power consumption of a part, it's size, whether most of the power is burned in a few elements or overall, what sort of package you have, and also what other circuits are placed nearby and their power consumption etc. So, no general answer is possible.

Why do you want to know this by the way?

Regards,

Vivek

Title: Re: Maximum on-chip variation in temperature for SOC
Post by cmos.analogvala on Jun 13^th, 2009, 9:33am

I have a signaling shcme for global interconnects where driver and receiver are placed far apart. I want to see the performance of the scheme under worst case temperature mismatch. Let's say in an SOC Tx is at FFT unit and Rx is near memory block. What is the worst case temperature difference on the chip ?

-CA .

Title: Re: Maximum on-chip variation in temperature for SOC
Post by ywguo on Jun 16^th, 2009, 7:50pm

Hi CA,

I agree with Vivek. So it is difficult to have a standard answer now. But don't worry. Make your chip/system consume less power, use a package with good cooling system to reduce the temperature variation.

Yawei

Title: Re: Maximum on-chip variation in temperature for SOC
Post by cmos.analogvala on Jun 17^th, 2009, 9:54am

I just need a maximum possible number you might have seen. Say 10 degree, 20 degree or 50 degree C temperature variations you see ?

-CA