IQS211B00050000TSR

Overview

The IQS211B00050000TSR is a single-channel self-capacitance controller from the ProxSense series, designed for proximity and touch detection with integrated movement sensing. It operates on a supply voltage of 1.8 V to 3.6 V and supports I2C or standalone interfaces. The device features automatic tuning implementation (ATI), configurable OTP settings, and ultra-low power modes consuming as little as sub-2 µA. It is housed in a TSOT-23-6 package and supports sensor loads up to 120 pF.

Feature Summary

• Integrated on-chip movement detection algorithm for long-term activation applications
• Configurable user interface supporting I2C polling, RDY interrupt, and standalone direct outputs
• Automatic Tuning Implementation (ATI) for environmental compensation without MCU interaction
• Ultra-low power operation with multiple standby and wake-up options

Applications

• Wearable devices requiring proximity or touch activation
• Movement detection systems such as fitness trackers and anti-theft alarms
• White goods and home appliances with long-term activation needs
• Human Interface Devices (HID) utilizing capacitive sensing
• Proximity activated backlighting systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and pre-programmed OTP configurations. Ensure compatibility with the required operating temperature range and interface mode before procurement. Cross-reference the part number with official distributor catalogs to confirm current availability status.

Selection Notes

Select this component when a single-channel solution with integrated movement detection is required. Consider the IQS211B variant over the A version if extended low-temperature performance (-40°C) is necessary. Verify that the application requires either I2C communication or standalone output modes compatible with the configurable pins.

Part Context

This part belongs to the Azoteq IQ Switch ProxSense series, which focuses on ultra-low power capacitive sensing. The IQS211B specifically offers hardware improvements for temperature response compared to the IQS211A while maintaining identical firmware functionality. It is pin-compatible with other sensors in the family like the IQS227/228 series.

Replacement Considerations

The IQS211A is a functional alternative with identical firmware but limited to a -20°C to 85°C operating range. Other pin-compatible options include the IQS127D, IQS128, IQS227AS, IQS228AS, and IQS231A, though output types may differ.