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See Technical Specifications

MPR121QR2

QFN-20(3x3) Touch Sensors ROHS

Manufacturer:

Nxp
Mfr.Part #:

MPR121QR2
Datasheet:

MPR121QR2 Datasheet (PDF)
Sensor Type:

Button, Slider, Wheel, Proximity
Number of Channels:

12 Channel
Interface Type:

I2C
Dimensions:

3 mm L x 3 mm W x 0.65 mm H
EDA/CAD Models:

Request Free CAD Models for MPR121QR2

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MPR121QR2 General Description

The MPR121QR2 is a capacitive touch sensor controller designed by NXP Semiconductors. It supports up to 12 electrodes for touch sensing applications. Key features include a low-power operation mode, I2C communication interface, and built-in filtering for robust performance in noisy environments. The device offers automatic electrode calibration, enabling reliable touch detection even with varying environmental conditions. It also provides adjustable sensitivity levels to accommodate different touch input requirements. Additionally, the MPR121QR2 integrates hardware debounce functionality, reducing the need for additional debounce circuitry in the system. With its small form factor and minimal external component requirements, it offers simplicity and flexibility for incorporating touch sensing capabilities into various electronic devices, ranging from consumer electronics to industrial applications.

Key Features

12-channel Capacitive Touch Sensor
Auto Calibration
Parallel I2C Interface
Multiple Operating Modes
Low Power Consumption
Interrupt Pin for Immediate Response
Configurable Threshold for Sensing Touch
Compatible with Various Host Controllers
Supports Standalone Mode
Adjustable Sensitivity Levels

Application

Consumer electronics: touch-sensitive controls for smartphones, tablets, and wearable devices
Automotive industry: implementation in car dashboards and infotainment systems
Home automation: touch-sensitive switches and controls for smart homes
Industrial automation: integration into machinery and equipment for touch input
Medical devices: touch-sensitive interfaces for healthcare equipment
Gaming: touch-sensitive controls for gaming consoles and peripherals
Security systems: touch-sensitive keypads for access control and security monitoring

Specifications

Product Category	Capacitive Touch Sensors	Sensor Type	Button, Slider, Wheel, Proximity
Number of Channels	12 Channel	Interface Type	I2C
Dimensions	3 mm L x 3 mm W x 0.65 mm H	Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C	Height	0.65 mm
Length	3 mm	Moisture Sensitive	Yes
Operating Supply Voltage	3.3 V	Product Type	Touch Sensors
Series	MPR121	Factory Pack Quantity	1000
Subcategory	Sensors	Termination Style	SMD/SMT
Width	3 mm	Unit Weight	0.000617 oz