CPT007B-A02-GU

Overview

The CPT007B-A02-GU is a capacitive touch controller from the TouchXpress family, designed to replace mechanical buttons without firmware development. It supports up to seven capacitive sensor inputs and features seven general-purpose outputs for host communication or LED driving. The device operates within a voltage range of 1.8 V to 3.6 V and functions between -40 °C and +85 °C. Power consumption is specified at 200 µA in active mode and 1 µA in sleep mode. It utilizes a 3 mm x 3 mm QFN package with 20 pins.

Feature Summary

• Eliminates complex firmware development through fixed-function operation
• Configured via simple GUI-based tool for all capacitive sense parameters
• Includes moisture immunity and wake-on-proximity capabilities
• Provides buzzer feedback functionality for enhanced user experience

Applications

• Home appliances
• Instrument and control panels
• White goods
• Medical equipment
• Consumer electronics

Procurement Notes

Verify component authenticity against official Silicon Labs documentation before integration. Confirm that the specific suffix corresponds to the required package variant. Check current lifecycle status as obsolescence may affect long-term supply availability. Ensure design compatibility with the specified voltage and temperature ranges.

Selection Notes

Select this component when minimizing development time for capacitive interfaces is critical. It is suitable for designs requiring low power consumption in battery-operated devices. Consider the GPIO output count relative to the target application's interface requirements. Evaluate the need for advanced features like proximity sensing versus simpler button-only implementations.

Part Context

This part belongs to the TouchXpress family of fixed-function controllers by Silicon Laboratories. The series aims to simplify user interface design by removing software complexity. Other members include variants with different packaging or pin configurations, such as the CPT007B-A01-GM. The family focuses on rapid deployment for consumer and industrial touch applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify cross-compatibility with existing system architectures if considering alternative capacitive controllers. Consult official Silicon Labs documentation for potential end-of-life alternatives.