IQS127D-00002-TSR

Overview

The IQS127D-00002-TSR is a single-channel capacitive proximity and touch controller from Azoteq's ProxSense series. It operates on a supply voltage of 2.95V to 5.5V and features an internal voltage regulator and reference capacitor. The device provides dedicated outputs for proximity (POUT) and touch (TOUT) events, with configurable logic levels and output modes via One-Time Programmable (OTP) settings. It employs Automatic Tuning Implementation (ATI) for optimal performance across varying environmental conditions. The component is housed in a TSOT23-6 package and supports operation within a temperature range of -40°C to +85°C.

Feature Summary

• Automatic Tuning Implementation (ATI) adjusts internal circuitry to optimize sensor performance without external reference capacitors.
• Integrated Internal Capacitor Implementation (ICI) eliminates the need for external reference components.
• Configurable power modes allow selection between Boost, Normal, and two Low Power states to balance response time and current consumption.
• Supports 1-Wire data streaming mode for direct communication with microcontrollers.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct configuration. Confirm that the required OTP settings match the default or pre-programmed state if custom configuration is not performed during prototyping. Ensure the design adheres to the specified supply voltage and temperature ranges for reliable operation.

Selection Notes

Select this component for applications requiring a single-channel capacitive solution with integrated tuning capabilities. Consider the available power modes when designing for battery-operated devices to optimize energy efficiency. Verify that the TSOT23-6 package dimensions fit the PCB layout constraints and that the interface requirements align with the available output configurations.

Part Context

The IQS127D belongs to Azoteq's IQ Switch® ProxSense® series, which focuses on fully integrated capacitive sensing solutions. This series is designed to replace electromechanical switches in various consumer and industrial applications. The IQS127D specifically targets single-button or proximity detection scenarios, offering a compact footprint and minimal external component count compared to discrete sensing circuits.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Consult Azoteq directly for alternative components within the IQS127 family or other ProxSense series devices that may offer different channel counts or package options.