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MTCH112

The Microchip MTCH112 Dual- Channel Proximity/Touch Controller provides an easy way to add proximity and/or touch sensor detection to any application. The device implements either two capacitive sensors or one sensor and one active guard driver, which is improving proximity performance. The optional device configuration through I2C™ allows presets to be loaded in a production environment. Automatic calibration routines are used by default to choose the best options, so user configuration
is not required.

Features

High Signal to Noise Ratio (SNR)
Adjustable sensitivity
Noise Rejection Filters
Automatic calibration with optional user presets
Dynamic threshold management
Automatic Environmental Compensation
Guard Sensing Option
Stuck Release Mechanism
I²C™ communication
No Required External Components
Low-Power mode
Response Time as low as 10 ms
Hardware error detection
Operating Voltage Range:1.8V to 3.3V

Parameter

Parameter Name Value	Value
Product Type Proximity/Keys/Slider	Proximity/Keys/Slider
Input Channels 2	2
Proximity detection Yes	Yes
Measurement Principle Self Capacitance	Self Capacitance
Power Modes 2	2
Interface I2C	I2C
Features Signal Guard	Signal Guard
Voltage Range 1.8V - 3.3V	1.8V - 3.3V

Documents

MTCH112 Dual-Channel Proximity/Touch Controller	Data Sheets	11/29/2012	1115KB
AN1325 - mTouch Metal Over Cap Technology	AppNote	09/28/2010	409KB
AN1334 - Techniques for Robust Touch Sensing Design	AppNote	05/09/2013	2254KB
AN1478 - mTouch Sensing Solution Acquisition Methods Capacitive Voltage Divider	AppNote	01/23/2013	678KB
AN1492 - Microchip Capacitive Proximity Design Guide	AppNote	02/25/2013	741KB
AN1626 - Implementing Metal Over Capacitive Touch Sensors	AppNote	01/29/2015	1594KB
Touch and 3D Gesture Control Brochure	Brochures	07/15/2016	3885KB
MTCH112 Dual Channel Proximity Touch Controller	Product Brief	11/10/2012	191KB
MTCH112 Evaluation Kit User's Guide	User Guides	01/28/2015	565KB

Ordering Information

Part Number	Leads	Package Type	Temp Range	Packing	1+	26+	100+	1000+	5000+
MTCH112-I/MF	8	DFN	-40C to +85C	TUBE	0.83	0.76	0.69	0.63	0.60
MTCH112-I/SN	8	SOIC	-40C to +85C	TUBE	0.75	0.69	0.62	0.57	0.55
MTCH112T-I/MF	8	DFN	-40C to +85C	T/R	0.85	0.78	0.70	0.65	0.62
MTCH112T-I/SN	8	SOIC	-40C to +85C	T/R	0.77	0.71	0.64	0.59	0.56

Similar Devices

Product	Product Type	Price5K	Notes
MTCH101	Proximity/Keys/Slider	$0.27
MTCH112	Proximity/Keys/Slider	$0.55
MTCH102	Proximity/Keys/Slider	$0.46
MTCH105	Proximity/Keys/Slider	$0.62
MTCH108	Proximity/Keys/Slider	$0.69	Water Resistance

RoHS Information

PartNumber	DeviceWeight	ShippingWeight	LeadCount	PackageType	PackageWidth	SolderComposition	JEDECIndicator
MTCH112T-I/SN	0.078000	0.230303	8	SOIC	.150In(3.90mm)	Matte Tin	e3
MTCH112-I/SN	0.078000	0.160000	8	SOIC	.150In(3.90mm)	Matte Tin	e3
MTCH112-I/MF	0.023800	0.041667	8	DFN	3x3x0.9mm	Matte Tin	e3
MTCH112T-I/MF	0.023800	0.172727	8	DFN	3x3x0.9mm	Matte Tin	e3