TMP100−EP, TMP101−EP

DIGITAL TEMPERATURE SENSOR

SGLS254A − JULY 2005 - REVISED APRIL 2010

4

POST OFFICE BOX 655303

APPLICATION INFORMATION

The TMP100 and TMP101 are digital temperature sensors optimal for thermal management and thermal

over a temperature range of −55

°C to +125°C.

The TMP100 and TMP101 require no external components for operation except for pullup resistors on SCL,

SDA, and ALERT although a 0.1-

μF bypass capacitor is recommended, as shown in Figure 1 and Figure 2.

ADD1

(Input)

0.1

μF

TMP100

ADD0

(Input)

3

5

6

SCL

SDA

Controller

GND

2

4

V+

1

Figure 1. Typical Connections of the TMP100

ALERT

(Output)

0.1

μF

TMP101

ADD0

(Input)

3

5

6

SCL

SDA

Controller

GND

2

4

V+

1

Figure 2. Typical Connections of the TMP101

The die flag of the lead frame is connected to pin 2. The sensing device of the TMP100 and TMP101 is the chip

itself. Thermal paths run through the package leads as well as the plastic package. The lower thermal resistance

of metal causes the leads to provide the primary thermal path. The GND pin of the TMP100 or TMP101 is directly

connected to the metal lead frame and is the best choice for thermal input.

To maintain the accuracy in applications requiring air or surface temperature measurement, care should be

taken to isolate the package and leads from ambient air temperature. A thermally conductive adhesive assists

in achieving accurate surface temperature measurement.