Thermal diode calculations, Ideal diode equation, Appendix a thermal diode calculations – AMD ATHLON 8 User Manual
Page 95: Appendix a, Table 29
25175H—March 2003
AMD Athlon™ XP Processor Model 8 Data Sheet
Preliminary Information
Appendix A - Thermal Diode Calculations
83
Preliminary Information
Appendix A
Thermal Diode Calculations
This section contains information about the calculations for the
on-die thermal diode of the AMD Athlon™ XP processor model
8. For electrical information about this thermal diode, see
Table 17, “Thermal Diode Electrical Characteristics,” on
page 42.
Ideal Diode Equation
The ideal diode equation uses the variables and constants
defined in Table 29.
Table 29. 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