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TMP007 bảng dữ liệu(PDF) 11 Page - Texas Instruments |
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TMP007 bảng dữ liệu(HTML) 11 Page - Texas Instruments |
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11 / 55 page  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 TMP007 www.ti.com SBOS685C – APRIL 2014 – REVISED JULY 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 17. For these temperatures, the majority of the radiation emitted is in the wavelength range of 3 µm to 20 µm. Figure 17. Black Body Emission Spectrum and Response 7.3.1 Spectral Responsivity The TMP007 is 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 TMP007 is shown in Figure 18. Figure 18. Relative Spectral Response vs Wavelength Copyright © 2014–2015, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: TMP007 |
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