Multiple Channel 1°C Temperature Sensors with Beta Compensation
Datasheet
These registers store the ideality factors that are applied to the external diodes. Table 7.18 defines
each setting and the corresponding ideality factor. Beta Compensation and Resistance Error Correction
automatically correct for most diode ideality errors; therefore, it is not recommended that these settings
be updated without consulting SMSC.
Table 7.18 Ideality Factor Look-Up Table (Diode Model)
SETTING
FACTOR
SETTING
FACTOR
SETTING
FACTOR
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
10h
11h
12h
13h
14h
15h
16h
17h
0.9949
0.9962
0.9975
0.9988
1.0001
1.0014
1.0027
1.0040
1.0053
1.0066
1.0080
1.0093
1.0106
1.0119
1.0133
1.0146
18h
19h
1Ah
1Bh
1Ch
1Dh
1Eh
1Fh
20h
21h
22h
23h
24h
25h
26h
27h
1.0159
1.0172
1.0185
1.0200
1.0212
1.0226
1.0239
1.0253
1.0267
1.0280
1.0293
1.0306
1.0319
1.0332
1.0345
1.0358
28h
29h
2Ah
2Bh
2Ch
2Dh
2Eh
2Fh
30h
31h
32h
33h
34h
35h
36h
37h
1.0371
1.0384
1.0397
1.0410
1.0423
1.0436
1.0449
1.0462
1.0475
1.0488
1.0501
1.0514
1.0527
1.0540
1.0553
1.0566
For CPU substrate transistors that require the BJT transistor model, the ideality factor behaves slightly
differently than for discrete diode-connected transistors. Refer to Table 7.19 when using a CPU
substrate transistor.
Table 7.19 Substrate Diode Ideality Factor Look-Up Table (BJT Model)
SETTING
FACTOR
SETTING
FACTOR
SETTING
FACTOR
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0.9869
0.9882
0.9895
0.9908
0.9921
0.9934
0.9947
18h
19h
1Ah
1Bh
1Ch
1Dh
1Eh
1.0079
1.0092
1.0105
1.0120
1.0132
1.0146
1.0159
28h
29h
2Ah
2Bh
2Ch
2Dh
2Eh
1.0291
1.0304
1.0317
1.0330
1.0343
1.0356
1.0369
SMSC EMC1413 / EMC1414
Revision 1.41 (02-23-12)
DATA3S9HEET
SMSC [ SMSC CORPORATION ]
