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AT42QT1040-MMHR - Microchip

Description: AT42QT1040-MMHR, Touch Controller IC, 20-Pin VQFN

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AT42QT1040-MMHR - Microchip - PCB symbol
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PCB Footprints
AT42QT1040-MMHR - Microchip PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - AT42QT1040-MMHR-1
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3D Models
AT42QT1040-MMHR - Microchip - 3D model - Quad Flat No-Lead - AT42QT1040-MMHR-1
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AT42QT1040-MMHR Details

  • Manufacturer Part Number:

    AT42QT1040-MMHR

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    VQFN-20

  • Pin Count:

    20

  • Manufacturer Package Code:

    VQFN-20

  • Country Of Origin:

    South Korea

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.31.00.01

  • Factory Lead Time:

    7 Weeks

  • Manufacturer:

    Microchip Technology Inc

  • YTEOL:

    14

  • Body Breadth:

    3 mm

  • Body Height:

    0.78 mm

  • Body Length or Diameter:

    3 mm

  • Mounting Feature:

    SURFACE MOUNT

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output:

    OPEN-DRAIN

  • Output Range:

    0.7-4V

  • Output Type:

    DIGITAL VOLTAGE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Equivalence Code:

    LCC20,.12SQ,18

  • Package Shape/Style:

    SQUARE

  • Sensors/Transducers Type:

    CAPACITIVE TOUCH SENSOR

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    1.8 V

  • Surface Mount:

    YES

AT42QT1040-MMHR Frequently Asked Questions (FAQs)

  • The recommended PCB layout for the AT42QT1040-MMHR involves placing the sensor on a separate layer from the MCU and other noisy components, using a ground plane to shield the sensor, and keeping the sensor traces as short as possible.
  • Calibration involves adjusting the sensor's sensitivity and offset to match the specific application. This can be done by taking multiple readings with the sensor in different states (e.g., touched and untouched) and adjusting the sensor's internal registers accordingly.
  • The maximum operating frequency of the AT42QT1040-MMHR is 400 kHz, but it can be operated at lower frequencies to reduce power consumption and noise.
  • To handle noise and interference, use a low-pass filter to remove high-frequency noise, add shielding to the sensor and its traces, and use a common mode choke to reduce electromagnetic interference.
  • Yes, the AT42QT1040-MMHR is designed to operate in wet or humid environments, but it's essential to ensure the sensor is properly sealed and protected from water and moisture to prevent damage.

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AT42QT1040-MMHR Overview

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About Microchip

Microchip Technology Inc. is a leading manufacturer of microcontrollers and semiconductor devices for a wide range of applications in the aerospace, automotive, consumer electronics, industrial, and medical industries. Alongside a comprehensive product portfolio, Microchip Technology Inc. also provides easy-to-use development tools that enable engineers to create optimal designs quickly with minimal iterations to reduce risk while lowering total system costs to market. Headquartered in Chandler, Arizona, th

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Part Image AT42QT1040-MMH Microchip Technology Inc

Capacitive Touch Sensor, Open-drain, 20 Pin, Plastic/epoxy