ADT7483A

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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

D1+

D1–

GND

ALERT/THERM2

THERM

1

2

3

4

5

6

7

8

NC = NO CONNECT

16

15

14

13

12

11

10

9

NC

ADD1

SCLK

SDATA

NC

NC

NC

D2–

D2+

ADD0

TOP VIEW

(Not to Scale)

ADT7483A

Figure 3.16-Lead QSOP Pin Configuration

Table 4. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

ADD1

Address 1 Pin. Tri-state input to set the SMBus address.

2

Positive Supply, 3 V to 3.6 V.

3

D1+

Positive Connection. Connects to the first remote temperature sensor.

4

D1−

Negative Connection. Connects to the first remote temperature sensor.

5

THERM

Open-Drain Output. Turns a fan on/off, or throttles a CPU clock in the event of an overtemperature

condition.

6

GND

Supply Ground Connection.

7

NC

No Connect.

8

NC

No Connect.

9

NC

No Connect.

10

NC

No Connect.

11

D2−

Negative Connection. Connects to the second remote temperature sensor.

12

D2+

Positive Connection. Connects to the second remote temperature sensor.

13

ALERT/THERM2

Open-Drain Logic Output. Used as interrupt or SMBus alert. This may also be configured as a second THERM

output. Requires a pull-up resistor.

14

SDATA

Logic Input/Output, SMBus Serial Data. Open-drain output. Requires a pull-up resistor.

15

SCLK

Logic Input, SMBus Serial Clock. Requires a pull-up resistor.

16

ADD0

Address 0 Pin. Tri-state input to set the SMBus address.