SX9500IULTRT

Touch Capacitive Sensor Overview

The SX9500IULTRT is an ultra-low power capacitive proximity and button sensor interface manufactured by Semtech. It features four dedicated channels for sensing, designed to detect human presence and touch inputs with high sensitivity. The device operates within a supply voltage range of 2.7 V to 3.6 V and draws a typical operating current of 27 µA. It supports an industrial temperature range from -40°C to +85°C and is housed in a compact 10-lead DFN package measuring 1.8 mm by 2.1 mm.

Touch Capacitive Sensor Feature Summary

• Ultra-low power consumption optimized for battery-operated wearable devices
• Four-channel capacitive sensing capability for simultaneous proximity and button detection
• Dedicated output pins simplify integration into host systems without complex processing

Touch Capacitive Sensor Applications

• Wearable health monitoring devices requiring proximity detection
• Smartwatches and fitness trackers for touch input and wear detection
• IoT sensors needing low-power human presence sensing

Touch Capacitive Sensor Procurement Notes

Verify the specific suffix IULTRT against the official Semtech datasheet to confirm pinout, packaging dimensions, and RoHS compliance status. Confirm availability through authorized distributors as stock levels may vary. Ensure the component meets the required industrial temperature specifications for the target application environment before finalizing procurement.

Touch Capacitive Sensor Selection Notes

Select this component when a multi-channel capacitive solution is required with minimal power overhead. Compare channel count and package size against alternatives like the SX9501 if dedicated outputs are not needed. Verify that the 1.8x2.1 mm footprint fits the PCB layout constraints and that the 2.7V minimum supply voltage aligns with the system power architecture.

Touch Capacitive Sensor Part Context

The SX9500 belongs to Semtech's PerSe Contact family of capacitive sensors. It complements other models like the SX9206 and SX9210 by offering a specialized four-channel configuration with dedicated outputs. This positioning targets applications where simple, reliable proximity and touch detection are prioritized over complex gesture recognition.

Touch Capacitive Sensor Replacement Considerations

The SX9501 is a related part in the same family but may differ in output configuration or feature set. Verify pin-to-pin compatibility and functional equivalence before substitution. Consult the official cross-reference documentation to ensure electrical parameters and package dimensions match the design requirements.