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.