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AT42QT2120-SU - Microchip

Description: Capacitive Touch Sensors QTouchADC-BSW Proximity Detection

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AT42QT2120-SU - Microchip - PCB symbol
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AT42QT2120-SU - Microchip PCB footprint - Small Outline Packages - Small Outline Packages - 20-pin-SOIC
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AT42QT2120-SU - Microchip - 3D model - Small Outline Packages - 20-pin-SOIC
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AT42QT2120-SU Details

  • Manufacturer Part Number:

    AT42QT2120-SU

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    SOIC-20

  • Pin Count:

    20

  • Manufacturer Package Code:

    SOIC-20

  • Country Of Origin:

    Mainland China

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.31.00.01

  • Factory Lead Time:

    8 Weeks

  • Manufacturer:

    Microchip Technology Inc

  • YTEOL:

    13

  • Additional Feature:

    SEATED HGT CALCULATED

  • Body Breadth:

    7.5 mm

  • Body Height:

    2.3 mm

  • Body Length or Diameter:

    12.8 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:

    SOP20,.4

  • 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-SU Frequently Asked Questions (FAQs)

  • A good PCB layout for the AT42QT2120-SU 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-SU 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-SU can support up to 12 touch keys. However, the actual number of touch keys that can be connected depends on the specific application and the sensor design. It's recommended to consult with Microchip's technical support team for specific guidance.
  • Yes, the AT42QT2120-SU is designed to operate in noisy environments. It has built-in noise filtering and debouncing algorithms that help to reject electromagnetic interference (EMI) and other types of noise. However, it's still important to follow proper PCB design and layout guidelines to minimize noise susceptibility.
  • The power consumption of the AT42QT2120-SU depends on the operating mode and the clock frequency. In active mode, the typical current consumption is around 1.5 mA at 1 MHz clock frequency. In sleep mode, the typical current consumption is around 1 μA. Consult the datasheet for more detailed power consumption information.

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AT42QT2120-SU Overview

Use the download button to access the AT42QT2120-SU schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like AT42Q, or try a keyword search, such as Other Sensors/Transducers

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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