IQS211B00000000CSR

Overview

The IQS211B00000000CSR 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 1.764 V to 3.6 V and supports I2C or standalone interfaces. The device features automatic tuning implementation (ATI), configurable OTP settings, and low-power modes including sub-2 µA standby. It is housed in a TSOT23-6 package and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrated on-chip movement detection algorithm for long-term activation applications
• Configurable primary and secondary outputs supporting multiple user interface modes
• Automatic Tuning Implementation (ATI) for environmental compensation without MCU interaction
• Supports both I2C communication and standalone direct output configurations

Applications

• Wearable devices requiring proximity-based wake-up
• Movement detection systems for fitness tracking or anti-theft security
• White goods and home appliances with touch or proximity controls
• Human Interface Devices (HID) utilizing capacitive sensing
• Proximity activated backlighting systems

Procurement Notes

Verify the specific ordering suffix CSR against the manufacturer's datasheet to confirm package type and configuration options. Ensure compatibility with required I2C addresses and OTP settings before integration. Confirm moisture sensitivity level and storage conditions align with assembly timelines.

Selection Notes

Select this component when ultra-low power consumption is critical alongside proximity detection capabilities. The IQS211B variant offers improved temperature response compared to the IQS211A. Consider the TSOT23-6 package for surface-mount applications requiring minimal external components and flexible output configuration via OTP.

Part Context

This part belongs to the Azoteq IQ Switch ProxSense series, which specializes in self-capacitance controllers. The IQS211B model provides hardware improvements over the IQS211A, specifically regarding temperature stability and low-temperature performance, while maintaining identical firmware functionality across the series.

Replacement Considerations

The IQS211A is pin-compatible but lacks the improved temperature response of the B variant. Other compatible parts include IQS127D, IQS128, IQS227AS, IQS228AS, and IQS231A, though output types may differ.