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What is meant by device variability ?

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vetriece86@gmail.com

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Hi all,

could someone explain,

What is meant by device variability in transistors ?

Is device variability and process variation are same ?

Thanks in advance.
 

Audioguru

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I would think that "device variability" is the difference of one transistor part number (no variation of the process) producing some transistors with a high current gain and others with a low current gain.

Process variation would be making a transistor part number with a process that creates high frequency but low current transistors and making another transistor part number using a different process that creates low frequency but high current transistors.
 

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