This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.

Images are for reference only,

See Technical Specifications

AT42QT1050-MMH

Capacitive Touch Buttons 20-VQFN (3x3)

Manufacturer:

Microchip
Mfr.Part #:

AT42QT1050-MMH
Datasheet:

AT42QT1050-MMH Datasheet (PDF)
Sensor Type:

Button
Number of Channels:

5 Channel
Interface Type:

I2C
Moisture Sensitive:

Yes
EDA/CAD Models:

Request Free CAD Models for AT42QT1050-MMH

Email: [email protected]

Skype: live:.cid.ab6b29428937b76

Tel: +852 95804164

AT42QT1050-MMH General Description

The Atmel(R) AT42QT1050 is a QTouchADC(TM) sensor driver. The device can sense from one to five keys, dependent on mode. The QT1050 includes all signal processing functions necessary to provide stable sensing under a wide variety of changing conditions, and the outputs are fully debounced. Only a few external parts are required for operation and no external Cs capacitors are required. The QT1050 modulates its bursts in a spread-spectrum fashion in order to heavily suppress the effects of external noise, and to suppress RF emissions. The QT1050 uses a QTouchADC method of acquisition. This provides greater noise immunity and eliminates the need for external sampling capacitors, allowing touch sensing using a single pin.

Key Features

Configurations: Comms mode
Number of Keys: 1 to 5 keys (or 1 to 4 keys plus a Guard Channel)
Technology: Patented spread-spectrum QTouchADC charge-transfer
Key Outline Sizes: 6 mm × 6 mm or larger (panel thickness dependent); widely different sizes and shapes possible
Layers Required: One
Electrode Materials: Etched copper; Silver; Carbon; Indium Tin Oxide (ITO)
Panel Materials: Plastic; Glass; Composites; Painted surfaces (low particle density metallic paints possible)
Up to 10 mm glass (electrode size dependent)
Up to 5 mm plastic (electrode size dependent)
Key Sensitivity: Individually settable using simple commands over I2C interface
Interface: I2C slave mode (400 kHz). Discrete detection outputs
Self-calibration
Auto-drift compensation
Noise filtering
Adjacent Key Suppression® (AKS®) – up to three groups possible
Moisture Tolerance: Increased moisture tolerance based on hardware design and firmware tuning
Power Saving: Low Power (LP) mode supports both Low Power and Deep Sleep modes
Power: 1.8 V to 5.5 V
12-ball WLCSP RoHS-compliant IC
20-pin VQFN RoHS-compliant IC

Specifications

Product Category	Capacitive Touch Sensors	Sensor Type	Button
Number of Channels	5 Channel	Interface Type	I2C
Moisture Sensitive	Yes	Product Type	Touch Sensors
Factory Pack Quantity	490	Subcategory	Sensors
Unit Weight	0.000667 oz