SX9306IULTRT

Touch Capacitive Sensor Overview

The SX9306IULTRT is an ultra-low power smart proximity sensor designed for Subsurface Active Radar (SAR) applications. It utilizes Semtech’s PerSe technology to detect human presence through various materials with high sensitivity and low power consumption. The device integrates a SAR-compliant solution that enables reliable detection in wearable devices, smart home appliances, and automotive interiors. Key electrical parameters include a supply voltage range of 2.7 V to 3.6 V, operating current typically in the microampere range, and operation within a temperature range of -40°C to +85°C. It features an I2C interface for communication and is housed in a compact DFN-6 package.

Touch Capacitive Sensor Feature Summary

• Ultra-low power consumption optimized for battery-operated wearable and portable devices
• Smart proximity sensing capability compliant with Subsurface Active Radar (SAR) regulations
• Capable of detecting human presence through non-conductive materials such as glass, plastic, or fabric
• Integrated signal processing for automatic calibration and noise rejection

Touch Capacitive Sensor Applications

• Wearable health monitoring devices requiring contactless presence detection
• Smart home appliances with auto-on/off functionality based on user proximity
• Automotive interior occupancy detection for climate control and lighting systems

Touch Capacitive Sensor Procurement Notes

Verify the specific ordering suffix IULTRT against the manufacturer's latest datasheet to confirm package type, tape-and-reel quantity, and RoHS compliance status. Ensure the component meets regional regulatory requirements for SAR emissions if deployed in consumer electronics. Cross-reference the Mouser part number 947-SX9306IULTRT for current availability and distributor-specific handling instructions.

Touch Capacitive Sensor Selection Notes

Select the SX9306IULTRT when designing systems requiring human presence detection through dielectric materials without physical contact. Compare channel count and sensitivity requirements against other PerSe family members like the SX9300 or SX9310. Ensure the system power budget aligns with the device's ultra-low standby and active current specifications. Verify I2C address configuration capabilities if multiple sensors are used on the same bus.

Touch Capacitive Sensor Part Context

The SX9306 belongs to Semtech’s PerSe Connect series, which focuses on high-performance SAR sensors for wireless connectivity and proximity applications. This series complements the PerSe Contact line, which targets capacitive touch and human interaction sensing. The SX9306 specifically addresses the need for radar-based presence detection that complies with international safety standards for radio frequency exposure.

Touch Capacitive Sensor Replacement Considerations

Direct replacements may include the SX9300IULTRT for dual-channel applications or the SX9310 for similar single-channel SAR proximity needs. Verify pin compatibility and software register mapping before substitution. Consult the official cross-reference guide for any functional differences in sensitivity or power modes.