IQS211B00050000CSR

Overview

The IQS211B00050000CSR is a single-channel self-capacitance controller from the Azoteq 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) and Internal Capacitor Implementation (ICI). It offers configurable outputs including activation and movement signals, with low power consumption down to sub-2 µA in specific modes. The component 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
• Automatic Tuning Implementation (ATI) for environmental compensation without MCU interaction
• Configurable primary and secondary digital outputs supporting various user interface modes
• Supports both I2C communication and standalone direct output operation

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 standby requirements
• Human Interface Devices (HID) utilizing capacitive sensing
• Proximity activated backlighting systems

Procurement Notes

Verify the complete part number against official manufacturer documentation to ensure correct configuration suffixes. Confirm package type and OTP settings match design requirements. Cross-reference with authorized distributors for availability and lead times. Ensure compliance with RoHS directives and regional export regulations before procurement.

Selection Notes

Select this model for applications requiring ultra-low power consumption with movement-based wake-up capabilities. The IQS211B variant provides improved temperature response compared to the IQS211A. Consider the TSOT23-6 package for standard surface mount assembly. Verify that the required sensor load capacitance falls within the supported limits for proximity or touch modes.

Part Context

This component belongs to the Azoteq IQ Switch ProxSense series, which focuses on self-capacitance controllers. The IQS211B shares identical firmware with the IQS211A but differs in hardware characteristics, specifically offering enhanced performance at lower temperatures. It is pin-compatible with older generations like the IQS127D and IQS227AS, facilitating easier upgrades in existing designs.

Replacement Considerations

The IQS211A serves as a functional alternative with identical firmware but different thermal characteristics. Pin-compatible replacements include the IQS127D, IQS128, IQS227AS, IQS228AS, and IQS231A, though output types may differ. Verify electrical specifications and package compatibility when substituting.