0.0

0.2

0.4

0.6

0.8

1.0

1.2

4.0

8.0

12.0

16.0

Wavelength (µm)

C005

0.000

0.005

0.010

0.015

0.020

0.025

0

5

10

15

20

Wavelength (µm)

450 K

400 K

350 K

300 K

250 K

C019

16 µm

4 µm

TMP006, TMP006B

www.ti.com

SBOS518E – MAY 2011 – REVISED APRIL 2015

Feature Description (continued)

The intensity of radiation from the object is determined by the emisivity (

ε), a material-dependent property that

scales the spectral response so that 0 <

ε < 1. For an ideal black body, the radiation is at a maximum for a given

temperature and

ε = 1. The temperature is measured on the kelvin scale where 0 K is absolute zero, or

–273.15°C. Room temperature (25°C) is approximately 298.13 K. The emission spectra for objects at or near

room temperature are shown in Figure 5. For these temperatures, the majority of the radiation emitted is in the

wavelength range of 3 µm to 20 µm.

Figure 5. Black Body Emission Spectrum and Response

8.3.1 Spectral Responsivity

The TMP006 and TMP006B are optimized to sense IR radiation emitted by objects from approximately 250 K

(–23°C) to 400 K (127°C), with maximum sensitivity from approximately 4 µm to 16 µm. The relative spectral

response of the TMP006 and TMP006B is shown in Figure 6.

Figure 6. Relative Spectral Response vs Wavelength

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