PIN

NAME

FUNCTION

1

SDA

Serial-Data Input/Output Line. Open drain. Connect SDA to a pullup resistor.

2

SCL

Serial Clock Input. Open drain. Connect SCL to a pullup resistor.

3

OS

Overtemperature Shutdown Output. Open drain. Connect OS to a pullup resistor.

4

GND

Ground

5

A2

Do not leave unconnected (see Table 1).

6

A1

Do not leave unconnected (see Table 1).

7

A0

Do not leave unconnected (see Table 1).

8

Positive Supply Voltage Input. Bypass to GND with a 0.1µF bypass capacitor.

Analog Devices │ 4

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LM75

Digital Temperature Sensor and Thermal

Watchdog with 2-Wire Interface

Typical Operating Characteristics

QUIESCENT SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (°C)

95

65

35

5

-25

240

250

260

270

280

290

300

230

-55

125

1

2

3

4

5

6

0

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (°C)

95

65

35

5

-25

-55

125

ACCURACY vs. TEMPERATURE

-1.5

-1.0

-0.5

0

0.5

1.0

1.5

2.0

-2.0

TEMPERATURE (°C)

95

65

35

5

-25

-55

125

4 TYPICAL PARTS

Pin Description