My experience is: because circuit performances worsen when temperature goes up, and thus designers prefer higher bias current in high-temperature environment to maintain roughly the same performances such as open-loop gain, hysteresis...etc. Of course you can design a temp-independent current by summing a PTAT and an inverse-PTAT current sources.
My experience is: because circuit performances worsen when temperature goes up, and thus designers prefer higher bias current in high-temperature environment to maintain roughly the same performances ...
My experience is: because circuit performances worsen when temperature goes up, and thus designers prefer higher bias current in high-temperature environment to maintain roughly the same performances ...
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发表于 2008-12-2 09:37:09
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