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AT42QT1040-MMH
Capacitive touch screen
AT42QT1040-MMH
Capacitive touch screen
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Manufacturer Part # : AT42QT1040-MMH
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Package/Case: QFN-20
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Part Status : ACTIVE
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Brand: Microchip Technology
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Product Categories : Sensor, Capacitive Touch
Quality Assurance
Quality Assurance
All parts procured from our supply chain network undergo a rigorous incoming inspection process. This meticulous inspection ensures that the parts received by our customers are authentic and meet the required standards. Additionally, we maintain detailed records of these inspections to ensure transparency and traceability throughout the supply chain.
Certification
We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.
Shipping & Payment
Shipping & Payment
About Shipping
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
Confirm the return or exchange with our staff.
Maintain the goods in their original condition as received.
Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]
About packaging
Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.
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AT42QT1040-MMH DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
The AT42QT1040-MMH operates on a wide voltage range of 1.8V to 5.5V, providing compatibility with a variety of systems. Its communication interfaces, including I2C and SPI, offer flexibility in integration with host devices, further enhancing its usability in different electronic applications
Key Features
- Number of Keys:– Up to 4 Discrete Outputs:– 4 discrete outputs indicating individual key touch Technology:– Patented spread-spectrum charge-transfer (direct mode) Electrode Design:– Simple self-capacitance style (refer to the Touch Sensors Design Guide) Electrode Materials:– Etched copper, silver, carbon, Indium Tin Oxide (ITO) Electrode Substrates:– PCB, FPCB, plastic films, glass Panel Materials:– Plastic, glass, composites, painted surfaces (low particle density metallic paints possible) Panel Thickness:– Up to 10 mm glass, 5 mm plastic (electrode size dependent) Key Sensitivity:– Fixed key threshold, sensitivity adjusted via sample capacitor value Adjacent Key Suppression™– Patented Adjacent Key Suppression™ (AKS™) technology to enable accurate key detection Interface:– Pin-per-key outputs, plus debug mode to observe sensor signals Moisture Tolerance:–Good Power:– 1.8V ~ 5.5V Package:– 20-pin 3 x 3 mm VQFN RoHS compliant Signal Processing:– Self-calibration, auto drift compensation, noise filtering, Adjacent Key Suppression technology
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Product Category ! | Capacitive Touch Sensors | RoHS | Details |
| Sensor Type | Button | Number of Channels | 4 Channel |
| Interface Type | Digital, Active Low | Package / Case | QFN-20 |
| Minimum Operating Temperature | - 40 C | Maximum Operating Temperature ! | + 85 C |
| Brand | Microchip Technology | Operating Supply Voltage ! | 1.8 V to 5.5 V |
| Product Type ! | Touch Sensors | Series | AT42QT1040 |
| Factory Pack Quantity | 6000 | Subcategory | Sensors |
| Termination Style | SMD/SMT | Part # Aliases | AT42QT1040-MMHR |
| Unit Weight | 0.000667 oz |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is AT42QT1040-MMH?
The AT42QT1040-MMH is a touch sensor IC (Integrated Circuit) manufactured by Microchip Technology. It is designed for capacitive touch sensing applications, allowing electronic devices to detect touch inputs for user interaction.
How Does AT42QT1040-MMH Work?
The AT42QT1040-MMH operates by sensing changes in capacitance when a conductive object, such as a human finger, approaches or touches the sensor pad. The IC detects these changes and processes them to determine touch input, enabling touch-sensitive controls in various electronic devices.
How Many Pins does AT42QT1040-MMH have and What are the Functions of the Pinout Configuration?
The AT42QT1040-MMH is housed in a 6-pin SOT-23 package. The pinout configuration includes:
- VDD: Power supply pin.
- SENSE: Capacitive touch sense input pin.
- OUT: Digital output pin indicating touch detection.
- GND: Ground pin.
- NC1, NC2: No Connect pins.
What are the Pros and Cons of AT42QT1040-MMH?
Pros:
- Capacitive Touch Sensing: Enables touch-based user interfaces for electronic devices.
- Low Power Consumption: Operates with low power, suitable for battery-powered devices.
- Simple Integration: Easy to use and integrate into designs with minimal external components.
- Compact Package: The SOT-23 package is space-efficient for compact designs.
Cons:
- Single Channel: Limited to single-channel touch sensing applications.
- Sensitivity to Environment: Sensitivity to environmental factors such as moisture and electromagnetic interference.
Are There Any Equivalents/Alternatives to AT42QT1040-MMH for Recommendation?
- An equivalent part to the AT42QT1040-MMH is the TTP223 Touch Sensor Module.
- Alternative touch sensor ICs include the CAP1188 from Microchip Technology and the TTP223B from Adafruit.
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