IQS227B00000000CSR

Overview

The IQS227B00000000CSR is a single-channel capacitive proximity and touch controller from the ProxSense series. It features an internal voltage regulator and reference capacitor, utilizing a charge transfer method for sensing. The device provides dedicated outputs for proximity (POUT) and touch (TOUT) events, supporting I2C data streaming. It operates within a supply voltage range of 1.8 V to 3.6 V and functions across a temperature range of -40°C to +85°C. The component is housed in a WLCSP-8 package with SMD/SMT termination.

Feature Summary

• Automatic Tuning Implementation (ATI) for sense electrode calibration
• Configurable One Time Programmable (OTP) options for power modes and output logic
• Advanced on-chip digital signal processing with noise detection capabilities
• Dual output configuration for simultaneous proximity and touch event handling

Applications

• LCD, Plasma & LED TVs
• GSM cellular telephones for on-ear detection and touch keys
• LED flashlights or headlamps
• White goods and appliances
• Office equipment, toys, and sanitary ware

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and electrical specifications. Ensure compatibility with system voltage requirements and interface protocols before integration. Confirm RoHS compliance status through official documentation. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component for applications requiring single-channel capacitive sensing with minimal external components. Consider the WLCSP-8 package for space-constrained designs. Evaluate OTP configuration needs for power modes and output logic prior to deployment. Ensure the operating environment falls within the specified temperature and voltage ranges.

Part Context

The IQS227B belongs to Azoteq's ProxSense family of capacitive sensors. This series integrates self-capacitive sensing technology with digital signal processing. The B variant supports lower voltage operation compared to the D variant. The CSR suffix indicates the specific packaging and reel configuration for surface-mount assembly.

Replacement Considerations

Direct replacements must match the single-channel capacitive sensing architecture and WLCSP-8 package. Verify pinout compatibility for Cx, VDDHI, GND, TOUT, POUT, and VREG/PGM pins. Ensure equivalent voltage range and temperature specifications are met by alternative components.