THMC10

REMOTE/LOCAL TEMPERATURE MONITOR

WITH SMBus INTERFACE

SLIS089 – DECEMBER 1999

17

POST OFFICE BOX 655303

PERFORMANCE DATA

temperature error vs power supply sinusoidal noise frequency

–2

–1

0

1

2

3

f – Frequency – Hz

10

100

1k

100k

100M

1M

10k

10M

62 mVp-p Remote

125 mVp-p Local

125 mVp-p Remote

62 mVp-p Local

250 mVp-p Local

250 mVp-p Remote

250 mVp-p Local

250 mVp-p Remote

Figure 9. Data Plot

STDBY

VDD

15

2

VDD

SMBCLK

SMBDATA

ALERT

VDD

GND

GND

ADD0

ADD1

Q1

2N3904

R4

50

Ω

HP8116A

Generator

To ICA93LV

I2C Controller

14

12

11

7

8

10

6

4

3

DXP

DXN

THMC10

R1

10 k

Ω

R2

50

Ω

R3

1 k

Ω

C1

20 pF

NOTE: No 0.1

µF VDD capacitor.

Figure 10. Test Circuit