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AT42QT2120-XU - Microchip

Description: Capacitive Touch Sensors 12 channel AT42QT2120-XU, Spread-Spectrum Charge-Transfer Touch Screen Controller Serial-I2C, 20-Pin TSSOP

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AT42QT2120-XU - Microchip - PCB symbol
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AT42QT2120-XU - Microchip PCB footprint - Small Outline Packages - Small Outline Packages - 20X
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AT42QT2120-XU Details

  • Manufacturer Part Number:

    AT42QT2120-XU

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    TSSOP-20

  • Pin Count:

    20

  • Manufacturer Package Code:

    TSSOP-20

  • Country Of Origin:

    Taiwan, Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.31.00.01

  • Factory Lead Time:

    7 Weeks

  • Manufacturer:

    Microchip Technology Inc

  • YTEOL:

    14

  • Additional Feature:

    SEATED HGT CALCULATED

  • Body Breadth:

    4.4 mm

  • Body Height:

    1.05 mm

  • Body Length or Diameter:

    6.5 mm

  • JESD-609 Code:

    e3

  • Mounting Feature:

    SURFACE MOUNT

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output:

    DIGITAL

  • Output Range:

    0.60-2.60V

  • Output Type:

    DIGITAL VOLTAGE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Equivalence Code:

    TSSOP20,.25

  • Package Shape/Style:

    RECTANGULAR

  • Sensors/Transducers Type:

    CAPACITIVE TOUCH SENSOR

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    1.8 V

  • Surface Mount:

    YES

  • Terminal Finish:

    Matte Tin (Sn)

AT42QT2120-XU Frequently Asked Questions (FAQs)

  • A good PCB layout for the AT42QT2120-XU involves keeping the sensor and the microcontroller close together, using a ground plane to reduce noise, and minimizing the length of the traces between the sensor and the microcontroller. A 4-layer PCB with a dedicated ground plane is recommended.
  • The AT42QT2120-XU does not require calibration. It is a self-calibrating capacitive touch controller that automatically adjusts to the environment and the sensor electrodes. However, it's recommended to follow the layout and design guidelines provided in the datasheet to ensure optimal performance.
  • The AT42QT2120-XU can support up to 12 touch keys or electrodes. However, the actual number of touch keys that can be connected depends on the specific application and the sensor design.
  • Yes, the AT42QT2120-XU can be used with microcontrollers from other manufacturers, as long as the microcontroller has an I2C interface and can communicate with the AT42QT2120-XU using the I2C protocol.
  • The power consumption of the AT42QT2120-XU depends on the operating mode and the frequency of the I2C interface. In active mode, the typical current consumption is around 1.5mA, and in sleep mode, it's around 1uA.

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AT42QT2120-XU 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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