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Original question:

DP83848I: power rating of bias resistor (49.9ohm of TD+/-)

DP83848I: power rating of bias resistor (TD+/-)

Yasushi Fujiwara
Genius 12725 points
Part Number: DP83848I

Hi Experts,

I asked question as following thread.
https://e2e.ti.com/support/interface/f/138/p/828705/3070383#3070383

But I don't understand how to calculate power dissipation of 49.9ohm registers.  Is my calculation number is wrong? If so, would you tell more detailed way?
[example]
- Worst case;
Ict=61.55mA, Rbias=49.9ohm,
Pdiss = Ict^2 * Rbias = 189mW

Best Regards,
Fujiwara