IQS211B00050000DNR

Overview

The IQS211B00050000DNR is a single-channel capacitive proximity and touch controller from Azoteq’s ProxSense series. It features an integrated movement detection algorithm for long-term activation in standalone or I2C modes. The device operates on a supply voltage of 1.764 V to 3.6 V with low power consumption ranging from sub-2 µA in LP mode to 80 µA at 50 Hz response. It supports sensor loads up to 60 pF for proximity and 120 pF for touch applications. Configuration is managed via One-Time Programmable (OTP) bits or I2C registers, offering flexible output types including PFM, PWM, and latched signals.

Feature Summary

• Integrated on-chip movement detection algorithm for forced activation
• Supports both standalone direct outputs and configurable I2C interfaces
• Automatic Tuning Implementation (ATI) for environmental compensation
• Low power operation with multiple standby and wake-up options

Applications

• Wearable devices requiring proximity activation
• Movement detection systems such as fitness trackers and anti-theft alarms
• White goods and home appliances with touch controls
• Human Interface Devices (HID) with gesture recognition
• Proximity activated backlighting systems

Procurement Notes

Verify the ordering suffix DNR corresponds to the Tape and Reel packaging specification defined in the datasheet. Confirm that the IQS211B variant meets the required -40°C to 85°C operating temperature range for your specific application environment. Ensure OTP configuration requirements are documented prior to procurement if pre-programmed settings are needed.

Selection Notes

Select the IQS211B over the IQS211A when extended low-temperature performance down to -40°C is required, as the B variant offers improved temperature response. Choose this component for designs needing minimal external components due to its internal capacitor implementation and automatic tuning capabilities. Consider the available packages (TSOT23-6, WLCSP-8, DFN-6) based on board space constraints.

Part Context

This part belongs to the IQ Switch ProxSense series, designed for self-capacitance sensing. The IQS211B shares identical firmware with the IQS211A but provides distinct hardware optimized for better thermal stability and lower temperature operation. It serves as a specialized solution for applications demanding reliable proximity and touch detection with minimal system complexity.

Replacement Considerations

The IQS211B is pin-compatible with the IQS127D, IQS128, IQS227AS, IQS228AS, and IQS231A, though output types may differ. When replacing these parts, verify that the new movement detection and output configuration logic aligns with the existing system design.