Capacitive proximity sensor SX9331WQ

squareserialprogrammable

The SX9331WQ is a 5 channel smart capacitive proximity sensor for Smart Human Sensing as well as other demanding proximity and touch applications. It has a unique Smart Human Engine that is able to accurately discriminate between an inanimate object and human body. Operating directly from an input supply voltage of 2.7-3.6V, the SX9331WQ outputs its data via I2C serial bus. The I2C serial communication bus port is compatible with 1.8V host control to report body detection/proximity and to facilitate parameter settings adjustment. Upon proximity detection, the NIRQ output asserts, enabling the user to either determine the relative proximity distance, or simply obtain an indication of detection. The SX9331WQ includes an on-chip auto-calibration controller that regularly performs sensitivity adjustments to maintain peak performance over a wide variation of temperature, humidity and noise environments, providing simplified product development and enhanced performance. Features 2.7-3.6V Input Supply Voltage Up to 5 High Performance Capacitive Sensors Inputs Patented On-Chip Smart Human Engine Capacitance Resolution down to 1aF Capacitance Offset Compensation up to 300pF Multiple thresholds per sensing input Separate configurations per input Automatic Calibration Up to 2 LED Drivers Up to 20mA Sink Current per IO Intensity Control (256-step PWM) Ultra-Low Power Consumption Active mode: 27 uA Doze Mode: 7 uA Sleep Mode: 1.1 uA I2C Serial Interface 2 Sub-Addresses Selectable by Pin Programmable Interrupt or Real-Time Status Pin -40°C to +105°C Operation