Microchip Technology Inc

AT42QT1070

In Production

The AT42QT1070 (QT1070) is a digital burst mode charge-transfer capacitive sensor driver. The device can sense from one to seven keys, dependent on mode.

The QT1070 has the optimized architecture where no external components are required and only 1-pin per channel. It includes all signal processing functions necessary to provide stable sensing under a wide variety of changing conditions, and the outputs are fully debounced.

The QT1070 modulates its bursts in a spread-spectrum fashion in order to heavily suppress the effects of external noise, and to suppress RF emissions. The QT1070 use a dual-pulse method of acquisition. This provides greater noise immunity and eliminates the need for external sampling capacitors, allowing touch sensing using a single pin.

 

    Features

        • Configurations:
          • Comms mode
          • Standalone mode
        • Number of Keys:
          • Comms mode: 1 – 7 keys (or 1 – 6 keys plus a Guard Channel)
          • Standalone mode: 1 – 4 keys plus a fixed Guard Channel on key 0
        • Number of I/O Lines in Standalone mode: 5 outputs
        • Technology: Patented spread-spectrum charge-transfer
        • Key Outline Sizes: 6 mm x 6 mm or larger (panel thickness dependent); widely different sizes and shapes possible
        • PCB 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
        • Panel Thickness: Up to 10 mm glass; Up to 5 mm plastic (electrode size dependent)
        • Key Sensitivity:
          • Comms mode: individually settable via simple commands over I2C-compatible interface
          • Standalone mode: settings are fixed
        • Interface:
          • I2C -compatible slave mode (400 kHz)
          • Discrete detection outputs
        • Signal Processing:
        • Self-calibration
        • Auto drift compensation
        • Noise filtering
        • Adjacent Key Suppression® (AKS®) – up to three groups possible
        • Power Supply: 1.8 V – 5.5 V
        • Packages:
          • 14-pin SOIC RoHS compliant IC
          • 20-pin VQFN RoHS compliant IC
    Parameter Name
    Value
    Product Type
    Proximity/Keys/Slider
    Input Channels
    7
    Max Number of Keys
    7
    Interface
    I2C and Discrete
    Features
    Signal Guard/Driven Shield
    Voltage Range
    1.8V - 5.5V
    Documentation
    Data Sheets
    10/01/2013
    399KB
      Application Notes
     
     
     
    AppNote
    11/01/2011
    1033KB
    AppNote
    02/01/2013
    173KB
    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
    AT42QT1070-MMHR
    20
    VQFN
    -40C to +85C
    T/R
    0.98
    0.90
    0.82
    0.75
    0.71
    AT42QT1070-SSUR
    14
    SOIC
    -40C to +85C
    T/R
    0.94
    0.87
    0.78
    0.72
    0.69

    ** Device not available to purchase online. Please contact a sales office for pricing information.
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    Development Tools
    • Demo & Eval Boards
    • 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.

    • 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.

    • 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:

        ...

    • 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.

    • 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.

    • 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:

    • 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.

    RoHS Information
    Part
    Number
    Device
    Weight
    Shipping
    Weight
    Lead
    Count
    Package
    Type
    Package
    Width
    Solder
    Composition
    JEDEC
    Indicator
    RoHS
     
    China
    EFUP
    AT42QT1070-SSUR
    0.143200
    0.325000
    14
    SOIC
    .150In(3.90mm)
    Matte Tin
    e3
    AT42QT1070-MMHR
    0.018900
    0.061000
    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.