Microchip Technology Inc
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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 Sheets

Brochures

12/10/2016
4660KB

Development tools data is currently unavailable.

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
Rohs icon
efup china icon
AT42QT1050-MMHR
0.018900
0.105000
20
VQFN
3x3x0.85mm
NiPdAu
e4
Rohs icon
efup china icon
AT42QT1050-UUR
0.002000
0.135200
12
WLCSP
1.555x1.403x0.538mm
SAC405
e1
Rohs icon
efup china icon
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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