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AT42QT1481-AU - Microchip

Description: Capacitive Touch Screen 1-Wire 48 Key 44-Pin TQFP Tray

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AT42QT1481-AU - Microchip - PCB symbol
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PCB Footprints
AT42QT1481-AU - Microchip PCB footprint - Quad Flat Packages - Quad Flat Packages - 44-TQFP
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3D Models
AT42QT1481-AU - Microchip - 3D model - Quad Flat Packages - 44-TQFP
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AT42QT1481-AU Details

  • Manufacturer Part Number:

    AT42QT1481-AU

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    TQFP-44

  • Pin Count:

    44

  • Manufacturer Package Code:

    TQFP-44

  • Country Of Origin:

    Taiwan, Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.31.00.01

  • Factory Lead Time:

    9 Weeks

  • Manufacturer:

    Microchip Technology Inc

  • YTEOL:

    14

  • Body Breadth:

    10 mm

  • Body Height:

    1.2 mm

  • Body Length or Diameter:

    10 mm

  • JESD-609 Code:

    e3

  • Mounting Feature:

    SURFACE MOUNT

  • Number of Terminals:

    44

  • Operating Temperature-Max:

    105 °C

  • Operating Temperature-Min:

    -40 °C

  • Output:

    OPEN-DRAIN

  • Output Range:

    0.6-4.2V

  • Output Type:

    DIGITAL VOLTAGE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Equivalence Code:

    QFP44,.47SQ,32

  • Package Shape/Style:

    SQUARE

  • Sensors/Transducers Type:

    TOUCH SENSOR

  • Supply Voltage-Max:

    5.25 V

  • Supply Voltage-Min:

    4.75 V

  • Surface Mount:

    YES

  • Terminal Finish:

    Matte Tin (Sn)

AT42QT1481-AU Frequently Asked Questions (FAQs)

  • Microchip provides a recommended PCB layout in the AT42QT1481-AU datasheet, but it's also recommended to follow general guidelines for capacitive touch sensing PCB design, such as keeping the sensor traces short and away from noise sources, and using a solid ground plane.
  • Calibration involves adjusting the sensor's sensitivity and threshold settings to optimize performance for the specific application. Microchip provides a calibration guide in the datasheet, and also offers a calibration tool as part of their Qtouch Studio software.
  • Yes, but it may require custom tuning of the sensor's settings and calibration. The AT42QT1481-AU is designed to work with standard electrode shapes and sizes, but Microchip provides guidelines for custom electrode designs in the datasheet.
  • The AT42QT1481-AU has built-in noise filtering and interference rejection capabilities, including a noise canceller and a spread spectrum clock. Additionally, Microchip recommends following best practices for noise reduction in capacitive touch sensing designs, such as using a solid ground plane and shielding.
  • The AT42QT1481-AU is rated for operation up to 105°C, but its performance may degrade at higher temperatures. Microchip recommends consulting the datasheet for specific temperature-related specifications and guidelines.

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AT42QT1481-AU 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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