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AT42QT1050

Status: In Production

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)
  • 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
  • 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
  • 12-ball WLCSP RoHS-compliant IC
  • 20-pin VQFN RoHS-compliant IC
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

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.

Additional 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
Parametrics
Name
Value
Product Type
Proximity/Keys/Slider
Input Channels
5
Max Number of Keys
5
Interface
I2C
Features
Signal Guard/Driven Shield
Voltage Range
1.80V - 5.50V

Documents

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Data Sheet

Brochures

12/10/2016
4660KB

Development tools data is currently unavailable.

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
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
0.105000
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.

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