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New Proximity Sensor Regulates RF Exposure to Reduce SAR

12 September 2017

Mouser Electronics, Inc. is now stocking the SX9310 SAR proximity sensor from Semtech. The SX9310 is a smart sensing solution that enables smartphone and tablet manufacturers to protect users from potentially harmful radio frequency (RF) exposure.

The SX9310 proximity sensor (Mouser)The SX9310 proximity sensor (Mouser)

The Semtech SX9310 SAR proximity sensor regulates RF exposure to reduce specific absorption rate (SAR) the measure of RF power that is radiated by the human body when it is in close proximity to a connected device. The smart sensing solution maintains optimum network connectivity and throughput while complying with SAR regulations for optimized data and voice communication quality of service.

The device features a unique on-chip smart engine designed for human detection and advanced SAR control. The device provides best in-class sensitivity for optimal human presence detection by offering up to three channels of high-performance capacitive sensing inputs, low-temperature drift for stable measurement, and a combined proximity mode to help minimize the sensing area.

The SX9310 smart sensor features ultra-low power consumption and operates directly from a 2.7V -5.5V input supply voltage. The device’s built-in I²C serial communication bus port is compatible with the 1.8V host control to help report body detection and proximity, and to facilitate parameter setting adjustments. The SX9310 includes an auto-calibration controller that regularly performs sensitivity adjustments to maintain peak performance over a variety of temperature, humidity and noise environments.

Semtech’s SX9310 SAR proximity sensor is optimized to meet stringent emission regulations criteria and SAR safety standards for a range of consumer electronics applications.

To learn more about this new product, visit the Mouser site here.

To contact the author of this article, email Siobhan.Treacy@ieeeglobalspec.com


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