EMC1413 datasheet(39/52 Pages) SMSC

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Multiple Channel 1°C Temperature Sensors with Beta Compensation

Datasheet

SMSC EMC1413 / EMC1414

Revision 1.41 (02-23-12)

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.

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 7.18 Ideality Factor Look-Up Table (Diode Model)

SETTING

FACTOR

SETTING

FACTOR

SETTING

FACTOR

08h

0.9949

18h

1.0159

28h

1.0371

09h

0.9962

19h

1.0172

29h

1.0384

0Ah

0.9975

1Ah

1.0185

2Ah

1.0397

0Bh

0.9988

1Bh

1.0200

2Bh

1.0410

0Ch

1.0001

1Ch

1.0212

2Ch

1.0423

0Dh

1.0014

1Dh

1.0226

2Dh

1.0436

0Eh

1.0027

1Eh

1.0239

2Eh

1.0449

0Fh

1.0040

1Fh

1.0253

2Fh

1.0462

10h

1.0053

20h

1.0267

30h

1.0475

11h

1.0066

21h

1.0280

31h

1.0488

12h

1.0080

22h

1.0293

32h

1.0501

13h

1.0093

23h

1.0306

33h

1.0514

14h

1.0106

24h

1.0319

34h

1.0527

15h

1.0119

25h

1.0332

35h

1.0540

16h

1.0133

26h

1.0345

36h

1.0553

17h

1.0146

27h

1.0358

37h

1.0566

Table 7.19 Substrate Diode Ideality Factor Look-Up Table (BJT Model)

SETTING

FACTOR

SETTING

FACTOR

SETTING

FACTOR

08h

0.9869

18h

1.0079

28h

1.0291

09h

0.9882

19h

1.0092

29h

1.0304

0Ah

0.9895

1Ah

1.0105

2Ah

1.0317

0Bh

0.9908

1Bh

1.0120

2Bh

1.0330

0Ch

0.9921

1Ch

1.0132

2Ch

1.0343

0Dh

0.9934

1Dh

1.0146

2Dh

1.0356

0Eh

0.9947

1Eh

1.0159

2Eh

1.0369

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