Microchip Technology Inc

AT42QT2120

In Production

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.

 
    Parameter 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
    1.8V - 5.5V
    Documentation
    Data Sheets
    06/01/2012
    561KB
      Application Notes
     
     
     
    AppNote
    11/01/2011
    1033KB
    AppNote
    02/01/2013
    173KB
    AppNote
    04/01/2012
    790KB
    AppNote
    10/01/2012
    278KB
    AppNote
    12/01/2012
    286KB
    AppNote
    03/01/2013
    363KB
    AppNote
    07/01/2014
    2509KB
    AppNote
    04/01/2015
    1151KB
    AppNote
    06/01/2015
    560KB
    AppNote
    12/10/2016
    3618KB
    AppNote
    12/10/2016
    1161KB
    AppNote
    12/10/2016
    1000KB
    AppNote
    12/10/2016
    1028KB
    AppNote
    08/01/2010
    416KB
    AppNote
    10/01/2008
    64KB
    AppNote
    10/01/2008
    272KB
    AppNote
    07/01/2008
    144KB
      Brochures
     
     
     
     
    Brochures
    12/10/2016
    4660KB
      User Guides
     
     
     
    User Guides
    02/01/2015
    3259KB
    User Guides
    12/10/2016
    1486KB
    User Guides
    12/10/2016
    1303KB
    Pricing & Samples
    All pricing shown in USD only.
    Part Number
    Leads
    Package Type
    Temp Range
    Packing
    1+
    26+
    100+
    1000+
    5000+
    Buy
    Sample
    AT42QT2120-MMH
    20
    VQFN
    -40C to +85C
    TRAY
    1.31
    1.20
    1.09
    1.00
    0.95
    AT42QT2120-MMHR
    20
    VQFN
    -40C to +85C
    T/R
    1.39
    1.27
    1.15
    1.06
    1.01
    AT42QT2120-SU
    20
    SOIC
    -40C to +85C
    TUBE
    1.25
    1.15
    1.04
    0.96
    0.91
    AT42QT2120-SUR
    20
    SOIC
    -40C to +85C
    T/R
    1.33
    1.22
    1.10
    1.02
    0.97
    AT42QT2120-XU
    20
    TSSOP
    -40C to +85C
    TUBE
    1.41
    1.29
    1.17
    1.07
    1.02
    AT42QT2120-XUR
    20
    TSSOP
    -40C to +85C
    T/R
    1.46
    1.34
    1.22
    1.12
    1.06

    ** Device not available to purchase online. Please contact a sales office for pricing information.
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    Development Tools
    • Demo & Eval Boards
    • QT6 Xplained Pro ( ATQT6-XPRO )

      QT6

      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.

    • SAMD20 QTR Demo ( ATSAMD20-QTRDEMO )

      SAMD20

      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:

    • QT3 Xplained Pro extension kit ( ATQT3-XPRO )

      QT3

      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.

    • QT2 Xplained Pro extension kit ( ATQT2-XPRO )

      QT2

      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.

    • SAMC20 QTR Demo ( ATSAMC20-QTRDEMO )

      SAMC20

      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:

        ...

    • SLCD1 Xplained Pro extension kit ( ATSLCD1-XPRO )

      SLCD1

      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.

    • QT1 Xplained Pro extension kit ( ATQT1-XPRO )

      QT1

      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.

    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
    AT42QT2120-SU
    0.542000
    0.973684
    20
    SOIC
    .300in
    Matte Tin
    e3
    AT42QT2120-XU
    0.078000
    0.175676
    20
    TSSOP
    4.4mm
    Matte Tin
    e3
    AT42QT2120-XUR
    0.078000
    0.200000
    20
    TSSOP
    4.4mm
    Matte Tin
    e3
    AT42QT2120-MMHR
    0.018900
    0.061000
    20
    VQFN
    3x3x0.85mm
    NiPdAu
    e4
    AT42QT2120-MMH
    0.018900
    0.126531
    20
    VQFN
    3x3x0.85mm
    NiPdAu
    e4
    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.