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MLX90621 bảng dữ liệu(PDF) 38 Page - Melexis Microelectronic Systems |
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MLX90621 bảng dữ liệu(HTML) 38 Page - Melexis Microelectronic Systems |
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38 / 44 page ![]() MLX90621 16x4 IR array Datasheet 39001090621 Page 38 of 44 Datasheet IR16x4 Rev 3.0 15 September 2016 Power dissipation within the package may affect performance in two ways: by heating the “ambient” sensitive element significantly beyond the actual ambient temperature, as well as by causing gradients over the package that will inherently cause thermal gradient over the cap Power supply decoupling capacitor is needed as with most integrated circuits. MLX90621 is a mixed-signal device with sensors, small signal analog part, digital part and I/O circuitry. In order to keep the noise low power supply switching noise needs to be decoupled. High noise from external circuitry can also affect noise performance of the device. In many applications a 100nF SMD ceramic capacitor close to the Vdd and Vss pins would be a good choice. It should be noted that not only the trace to the Vdd pin needs to be short, but also the one to the Vss pin. Using MLX90621 with short pins improves the effect of the power supply decoupling. Check www.melexis.com for most recent application notes about MLX90621. |
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