AT42QT2160-MMU

Overview

The AT42QT2160-MMU is a capacitive touch controller integrating button and slider functions within a single device. It supports up to 16 independent touch keys and sliders composed of 2 to 8 channels. The IC includes an integrated LED driver capable of controlling up to 11 LEDs via PWM outputs, eliminating the need for external controllers. Operating on a supply voltage range of 1.8V to 5.5V with a typical current consumption of 1.127mA, it utilizes I2C communication. The component features a 10-bit resolution and is housed in a 28-VQFN (4x4mm) package.

Feature Summary

• Combines multi-key and slider sensing capabilities in one integrated circuit
• Integrates direct LED driving functionality via PWM outputs
• Employs spread-spectrum charge-transfer technology for high EMI immunity
• Includes adjacent key suppression to prevent false triggers

Applications

• Multimedia human-machine interface controllers for mobile phones
• Personal media players and handheld gaming devices
• Battery-powered consumer electronics such as PDAs and digital cameras

Procurement Notes

Verify the specific suffix MMU against the manufacturer's official datasheet to confirm pinout compatibility and package dimensions. Ensure the design accounts for the 28-VQFN footprint and thermal requirements. Confirm that the I2C address configuration aligns with system constraints before finalizing procurement orders.

Selection Notes

Select this component when both button and slider inputs are required alongside integrated LED control. It is suitable for designs needing high EMI resistance and low power consumption. Verify that the maximum input count of 16 channels meets the application's sensor density requirements without exceeding the available GPIO resources.

Part Context

This part belongs to Atmel's QTouch and QMatrix series of capacitive touch controllers. It leverages Quantum Research Group's charge-transfer technology, which was acquired by Atmel. The device represents a specialized solution for complex HMI applications requiring multiple input types and output control in a compact form factor.

Replacement Considerations

Publicly confirmed substitute part numbers for the AT42QT2160-MMU are not available in the provided documentation. Engineers should consult Microchip Technology's official cross-reference tools or contact technical support directly for verified alternative components.