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31993A-1 September 2004 AMD Sempron™ Processor Model 10 Data Sheet
AMD Confidential—Advance Information
Appendix A - Thermal Diode Calculations 79
AMD Preliminary Information
Appendix A
Thermal Diode Calculations
This section contains information about the calculations for the
on-die thermal diode of the AMD Sempron™ processor model
10. For electrical information about this thermal diode, see
Table 13, “Thermal Diode Electrical Characteristics,” on
page 35.
Ideal Diode Equation
The ideal diode equation uses the variables and constants
defined in Table 24.
Table 24. Constants and Variables for the Ideal Diode Equation
Equation Symbol Variable, Constant Description
n
f, lumped
Lumped ideality factor
k Boltzmann constant
q Electron charge constant
T Diode temperature (Kelvin)
V
BE
Voltage from base to emitter
I
C
Collector current
I
S
Saturation current
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