IQS269AD0CSR

Sensor And Detector Interfaces Overview

The IQS269AD0CSR is an 8-channel capacitive touch and proximity controller from the ProxFusion series, integrating Hall-effect and inductive sensing capabilities. It operates on a supply voltage of 1.764V to 3.6V with a typical regulator output of 1.62V to 1.7V. The device supports I2C communication at frequencies up to 400 kHz and features ESD ratings of ±4000 V (HBM) and ±500 V (CDM). Power consumption ranges from 1.3 µA in Halt Mode to 185 µA in Normal Power Mode at 3.3V. It offers a capacitance detection range of 0 to 200 pF with a resolution down to 0.02 fF.

Sensor And Detector Interfaces Feature Summary

• Integrates mixed sensing technologies including self/mutual-capacitive, inductive, and Hall-effect sensors within a single chip.
• Features automatic tuning, noise filtering, and differential offset compensation for stable performance in mechanically sensitive designs.
• Supports advanced user interface functions such as sliders with coordinate output and gesture detection including flick, swipe, and tap.
• Provides configurable pre-programmed options for standalone operation, active high outputs, and timed long-press pulses.

Sensor And Detector Interfaces Applications

• Wear detection in mobile devices
• Multi-slider and button designs
• Low power wake-up buttons and proximity sensing
• Hall dock detection

Sensor And Detector Interfaces Procurement Notes

Verify the specific ordering suffix 'D0' against the manufacturer's documentation to confirm the TWS pre-programmed option configuration. Ensure that the selected package type matches the required PCB footprint dimensions. Confirm RoHS compliance status through official datasheets before finalizing procurement specifications.

Sensor And Detector Interfaces Selection Notes

Select this component for applications requiring combined capacitive, inductive, and magnetic sensing. Evaluate the available package options, including QFN16, QFN20, and WLCSP-16, based on spatial constraints. Consider the power mode requirements to optimize system battery life, noting the ultra-low power capabilities.

Sensor And Detector Interfaces Part Context

The IQS269A belongs to Azoteq's ProxFusion series, designed for high-end proximity and touch applications. It utilizes charge-transfer technology to achieve high sensitivity and signal-to-noise ratios. The series targets mobile electronics where safety, performance, and low power consumption are critical design parameters.

Sensor And Detector Interfaces Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing firmware and hardware layouts if considering alternative controllers from the same family or different manufacturers.

Sensor And Detector Interfaces FAQ

What is the default I2C address for the IQS269A?

The default I2C address is 0x44. It can be changed to 0x45 by connecting the ADDR/GPIO4 pin to VSS.

How does the TWS option affect GPIO behavior?

In the TWS option, GPIO3 provides a direct active high output for touch response on CRX0, while GPIO4 outputs a single active high pulse if the touch condition lasts longer than 5 seconds.

What is the maximum capacitance supported by the external electrodes?

The maximum capacitance of all external electrodes on all ProxFusion blocks is 200 pF.