ROHM recommends a thermal pad size of at least 2.5mm x 2.5mm with multiple vias to the ground plane to ensure good heat dissipation. Additionally, keeping the PCB layer stack-up symmetrical and using a solid ground plane can help reduce thermal resistance.
To ensure accurate temperature measurement, it's essential to follow proper PCB layout and assembly guidelines. This includes keeping the thermal pad clean and free of solder resist, using a small thermal pad size, and avoiding any thermal barriers between the device and the PCB. Additionally, calibrating the temperature sensor using a thermocouple or other reference temperature sensor can help improve accuracy.
Although the datasheet specifies a recommended operating voltage range of 2.7V to 5.5V, the absolute maximum rating for the VCC pin is 6.5V. However, it's essential to note that operating the device at or near the absolute maximum rating can reduce its lifespan and reliability.
The KTR10EZPJ155 is not hermetically sealed, so it's not recommended for use in high-humidity environments. However, ROHM does offer other temperature sensor products with enhanced moisture resistance, such as the KTR10EZPJ155L, which features a moisture-resistant coating.
The KTR10EZPJ155 is an ESD-sensitive device, so it's essential to follow proper ESD handling procedures when handling the device. This includes using an ESD wrist strap, ESD mat, or other ESD protection devices to prevent static electricity from damaging the device.
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