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AT42QT1070

Status: In Production

Features:

  • Comms mode
  • Standalone mode
  • 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)
  • Comms mode: individually settable via simple commands over I2C-compatible interface
  • Standalone mode: settings are fixed
  • 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
  • 14-pin SOIC RoHS compliant IC
  • 20-pin VQFN RoHS compliant IC
View More
Overview
Documents
Development Environment
RoHS Information
Add To Cart

Device Overview

Summary

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.

Additional 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
Parametrics
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
1.80V - 5.50V

Documents

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Brochures

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
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

...

Learn More
Add To Cart
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.

Learn More
Add To Cart
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
Add To Cart
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
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:

    ...

    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:

    ...

    Learn More
    Add To Cart
    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.

    Learn More
    Add To Cart

    RoHS Information

    Part Number
    Device Weight (g)
    Shipping Weight (grams)
    Lead Count
    Package Type
    Package Width
    Solder Composition
    JEDEC Indicator
    RoHS
    China EFUP
    AT42QT1070-MMHR
    0.018900
    0.105000
    20
    VQFN
    3x3x0.85mm
    NiPdAu
    e4
    AT42QT1070-SSUR
    0.143200
    0.325000
    14
    SOIC
    .150In(3.90mm)
    Matte Tin
    e3
    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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