Microchip Technology Inc
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AT42QT2120

Status: In Production

Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The Microchip's AT42QT2120 is a capacitive touch controller with 12 configurable Microchip QTouchADC buttons, sliders and wheels. The QTouchADC sensing algorithm (self capacitance) enables the user to achieve longer-range proximity sensing. This capability makes the device ideal for any type of proximity-sensing application, including wake-up, thermostat, TV controls, wireless mouse, etc. This reduces the total power consumption of your device and results in a more intuitive and differentiated user interface.

The button sensors can be constructed in a variety of shapes and sizes. The device includes all the necessary signal processing functions required to provide stable sensing under a wide variety of changing conditions and frequencies (conducted immunity certified to EN61000-4-6 Level 2B).

The QTouchADC sensing algorithm enables superior sensing because of faster acquisition times and shorter burst lengths. This algorithm is utilized in the new Microchip AT42QT2120 touch controller, as well in the Microchip QTouch Library in the Microchip ATtiny20 and ATtiny40 devices. In addition to providing the industry's best proximity range, QTouchADC removes the need for any external components per sensing channel and reduces the pins to 1-pin-per-channel.

Parametrics
Name
Value
Product Type
Proximity/Keys/Slider
Input Channels
12
Max Number of Keys
12
Slider/Wheel
Yes
Proximity detection
Yes
Interface
I2C
Voltage Range
1.80V - 5.50V

Documents

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Data Sheets

06/01/2012
561KB

Brochures

12/10/2016
4660KB

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
QT2 Xplained Pro extension kit
QT2 Xplained Pro extension kit ( ATQT2-XPRO )

QT2 Xplained Pro is a QTouch Surface extension board for Xplained Pro boards that demonstrates the Peripheral Touch Controller (PTC) as a high performance touch-surface controller. The PTC controller uses very little power and resources from the MCU, which makes it easy to integrate touch surface support to your main project.

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SAMC20 QTR Demo
SAMC20 QTR Demo ( ATSAMC20-QTRDEMO )

The SAM C20 QTouch Robustness Evaluation kit demonstrates the high capacitive touch performance of the Peripheral Touch Controller (PTC) while achieving best-in-class conducted immunity and moisture tolerance required in home appliance and industrial applications.

The demo is based on the QTouch Library.

Key features:

    ...

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    SLCD1 Xplained Pro extension kit
    SLCD1 Xplained Pro extension kit ( ATSLCD1-XPRO )

    SLCD1 Xplained Pro is an extension kit with a 96-segment LCD display. It connects to Xplained Pro evaluation kits with segment LCD extension headers. For supported kits, see the related tools tab.

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    QT1 Xplained Pro extension kit
    QT1 Xplained Pro extension kit ( ATQT1-XPRO )

    QT1 Xplained Pro kit is an extension kit that enables evaluation of self- and mutual capacitance mode using the Peripheral Touch Controller(PTC). The kit shows how easy it is to design a capacitive touch board solution using the PTC without the need for any external components. The kit includes two boards, one using self-capacitance and one using mutual capacitance.

    If you want to

    ...

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    QT6 Xplained Pro
    QT6 Xplained Pro ( ATQT6-XPRO )

    The QT6 Xplained Pro is a QTouch Surface extension board for Xplained Pro boards that demonstrates the Peripheral Touch Controller (PTC) as a high performance touch-surface controller. The PTC controller uses very little power and resources from the MCU, which makes it easy to integrate touch surface support to your main project.

    Learn More
    Add To Cart
    SAMD20 QTR Demo
    SAMD20 QTR Demo ( ATSAMD20-QTRDEMO )

    The SAM D20 QTouch Robustness Evaluation kit demonstrates the high capacitive touch performance of the Peripheral Touch Controller (PTC) while achieving best-in-class conducted immunity and moisture tolerance required in home appliance and industrial applications.

    The demo is part of the QTouch Safety Platform, key features of the QTouch Safety Platform are:

    ...

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    QT3 Xplained Pro extension kit
    QT3 Xplained Pro extension kit ( ATQT3-XPRO )

    QT3 Xplained Pro is a QTouch keypad extension board demonstrating an ultra-low power keypad design using the Peripheral Touch Controller (PTC). Utilizing the PTCs low power capabilities it enables markets lowest power wake-up on touch.

    Note: QT3 Xplained Pro requires a compatible Xplained Pro evaluation kit. See the Related Tools tab for supported models.

    Learn More
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    RoHS Information

    Part Number
    Device Weight
    Shipping Weight
    Lead Count
    Package Type
    Package Width
    Solder Composition
    JEDEC Indicator
    RoHS
    China EFUP
    AT42QT2120-SUR
    0.542000
    0.311875
    20
    SOIC
    .300in
    Matte Tin
    e3
    Rohs icon
    efup china icon
    AT42QT2120-SU
    0.542000
    0.973684
    20
    SOIC
    .300in
    Matte Tin
    e3
    Rohs icon
    efup china icon
    AT42QT2120-XU
    0.078000
    0.175676
    20
    TSSOP
    4.4mm
    Matte Tin
    e3
    Rohs icon
    efup china icon
    AT42QT2120-XUR
    0.078000
    0.200000
    20
    TSSOP
    4.4mm
    Matte Tin
    e3
    Rohs icon
    efup china icon
    AT42QT2120-MMHR
    0.018900
    0.105000
    20
    VQFN
    3x3x0.85mm
    NiPdAu
    e4
    Rohs icon
    efup china icon
    AT42QT2120-MMH
    0.018900
    0.126531
    20
    VQFN
    3x3x0.85mm
    NiPdAu
    e4
    Rohs icon
    efup china icon
    To see a complete listing of RoHS data for this device, please Click here
    Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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