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Typical Applications

Figure 6 shows the basic temperature sensor connections for the TMP36 temperature sensor. Table 1 shows

the corresponding pin descriptions for the three package types of temperature sensors. For the SOT-23, Pin 3 is

labeled as “NC” as are Pins 2, 3, 6, and 7 on the SOIC package. It is recommended that no electrical connections

be made to these pins. If the shutdown feature is not needed on the SOT-23 or the SOIC package, the /

SHUTDOWN pin should be connected to +VS. Note the 0.1µF bypass capacitor on the input side of the power

supply. This capacitor should be a ceramic type, and be located as close a physical proximity to the

temperature sensor supply pin as practical to reach better filter effect. Minimizing the radio frequency interference

(RFI) is especially important for these devices because the temperature sensor operates at very low current and

can be exposed to extremely hostile electrical environments. When the sensor operates in an environment with

high frequency radiation or high conducted noise, connecting a 0.1 μF ceramic capacitor in parallel with a large

value tantalum capacitor (2.2 μF) can provide better noise reduction capability.

Figure 6. Basic Temperature Sensor Connections

TMP36

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