Microchip Technology Inc

AT42QT1050

In Production

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.

 

    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)
        • Panel Thickness:
          • 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
        • Signal Processing:
          • 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
        • Package:
          • 12-ball WLCSP RoHS-compliant IC
          • 20-pin VQFN RoHS-compliant IC
    Parameter Name
    Value
    Product Type
    Proximity/Keys/Slider
    Input Channels
    5
    Max Number of Keys
    5
    Interface
    I2C
    Features
    Signal Guard/Driven Shield
    Voltage Range
    1.8V - 5.5V
    Documentation
    Data Sheets
    01/01/2014
    499KB
      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
    AT42QT1050-MMH
    20
    VQFN
    -40C to +85C
    TRAY
    1.00
    0.92
    0.83
    0.77
    0.73
    AT42QT1050-MMHR
    20
    VQFN
    -40C to +85C
    T/R
    1.08
    0.99
    0.90
    0.82
    0.78
    AT42QT1050-UUR
    12
    WLCSP
    -40C to +85C
    T/R
    1.08
    0.99
    0.90
    0.82
    0.78

    ** Device not available to purchase online. Please contact a sales office for pricing information.
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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
    AT42QT1050-MMH
    0.018900
    0.126531
    20
    VQFN
    3x3x0.85mm
    NiPdAu
    e4
    AT42QT1050-MMHR
    0.018900
    0.061000
    20
    VQFN
    3x3x0.85mm
    NiPdAu
    e4
    AT42QT1050-UUR
    0.002000
    0.135200
    12
    WLCSP
    1.555x1.403x0.538mm
    SAC405
    e1
    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.