THMC10

REMOTE/LOCAL TEMPERATURE MONITOR

WITH SMBus INTERFACE

SLIS089 – DECEMBER 1999

18

POST OFFICE BOX 655303

PERFORMANCE DATA

temperature error vs PNP collector square wave noise frequency

–1

0

1

f – Frequency – Hz

10

100

1k

100k

100M

1M

10k

10M

100 mVp-p Local

100 mVp-p Remote

Figure 11. Data Plot

STDBY

VDD

15

2

3.3 V

SMBCLK

SMBDATA

ALERT

3.3 V

GND

GND

ADD0

ADD1

Q1

2N3906

R2

50

Ω

HP8116A

Generator

To ICA93LV

I2C Controller

14

12

11

7

8

10

6

4

3

DXP

DXN

THMC10

R1

10 k

Ω

NOTE: No 0.1

µF VDD capacitor.

No 2200 pF DXP-DXN filter capacitor.

Representative of

Processor On-Die

Sensing Diode

Figure 12. Test Circuit