MTCH102T-I/MS

Overview

The MTCH102T-I/MS is a capacitive proximity and touch controller from Microchip Technology, featuring two sensor inputs with active guarding capability. It operates within a voltage range of 2.05V to 3.6V and supports an operating temperature range of -40°C to +85°C. The device provides simple digital outputs for detecting proximity or touch states. Sensitivity and power modes are configurable via dedicated pins, allowing optimization for various application requirements without complex firmware.

Feature Summary

• Capacitive proximity and touch detection system with high signal-to-noise ratio
• Active guarding capability to shield sensors from nearby noise sources
• Multi-stage active noise suppression filters for reliable detection
• Flexible low-power mode selectable via hardware pin configuration

Applications

• Light switches
• Portable device enablers
• White goods and appliances
• Office equipment and toys
• Display and keypad back-lighting activation

Procurement Notes

Verify the specific package type and tape-and-reel quantity against the manufacturer's current documentation before ordering. Confirm that the industrial temperature grade (-40°C to +85°C) meets the operational requirements of the target environment. Ensure the supply voltage in the final design remains strictly within the 2.05V to 3.6V range to guarantee proper functionality.

Selection Notes

Select this component when a dual-channel capacitive touch solution with minimal interface complexity is required. The MTCH102 offers hardware-configurable sensitivity and power modes, reducing firmware overhead compared to programmable controllers. Consider the MSOP-8 package for compact designs requiring two independent sensor inputs with active guard support.

Part Context

The MTCH102 belongs to the mTouch MTCH10x family, which includes single, dual, five, and eight-channel variants. This family is designed for applications needing simple digital output interfaces for proximity and touch detection. The MTCH102 specifically targets use cases requiring two sensor channels with active guarding capabilities integrated into a small form-factor package.

Replacement Considerations

The MTCH101 serves as a single-channel alternative within the same family. For applications requiring more than two channels, the MTCH105 (5-channel) or MTCH108 (8-channel) are direct functional equivalents with expanded input counts. All devices share similar operating principles and interface characteristics.