Appendix A Thermal Diode Calculations; Ideal Diode Equation; Table 28. Constants And Variables For The Ideal Diode Equation - AMD Athlon XP 10 Datasheet

26237C—May 2003

Ideal Diode Equation

Appendix A - Thermal Diode Calculations
Preliminary Information
Preliminary Information
Thermal Diode Calculations
This section contains information about the calculations for the
on-die thermal diode of the AMD Athlon™ XP processor model
10. For electrical information about this thermal diode, see
Table 13, "Thermal Diode Electrical Characteristics," on
page 37.
The ideal diode equation uses the variables and constants
defined in Table 28.

Table 28. Constants and Variables for the Ideal Diode Equation

Equation Symbol
n
Lumped ideality factor
f, lumped
k Boltzmann constant
q Electron charge constant
T Diode temperature (Kelvin)
V
Voltage from base to emitter
BE
I
Collector current
C
I
Saturation current
S
AMD Athlon™ XP Processor Model 10 Data Sheet
Appendix A
Variable, Constant Description
81