Description
The AT42QT1011-MAHR is a compact, low-power capacitive touch sensor IC designed for small SOT23 packages. It operates on a wide 1.8V to 5.5V power supply range and features adjustable sensitivity for flexible use. This device can detect touch through various materials, making it suitable for compact designs with reliable operation. The AT42QT1011-MAHR is typically used in various touch-sensitive electronic products such as remote controls, small appliances, toys, and consumer electronics. It can also be integrated into automotive applications for touch-sensitive controls on steering wheels or dashboards.
Features
The AT42QT1011-MAHR features include:
- Designed for small SOT23 packages
- Low power consumption with robust performance
- Detects touch through various materials
- Suitable for compact designs with reliable operation
- Compact touch sensor IC
- Operates on a wide 1.8V to 5.5V power supply range
- Adjustable sensitivity for flexible use
These features make the AT42QT1011-MAHR suitable for various applications such as remote controls, small appliances, toys, and consumer electronics, as well as automotive applications for touch-sensitive controls.
Package
The package type of AT42QT1011-MAHR is UDFN8 (8-pin, ultra-thin fine pitch, dual in-line, non-leaded).
Manufacturer
The manufacturer of the AT42QT1011-MAHR is Microchip Technology.
Applications
According to the product information, the application areas of AT42QT1011-MAHR include:
- Various touch-sensitive electronic products such as remote controls, small appliances, toys, and consumer electronics
- Automotive applications for touch-sensitive controls on steering wheels or dashboards
Specifications
| Programmabe |
Not Verified |
Type |
Buttons |
| Proximity Detection |
Yes |
Number of Inputs |
1 |
| Resolution |
14 b |
Voltage - Supply |
1.8V ~ 5.5V |
| Current - Supply |
378.5µA |
Operating Temperature |
-40°C ~ 85°C |
| Mounting Type |
Surface Mount |
Base Product Number |
AT42QT1011 |
| Package/Case |
UDFN-8 |
AT42QT1011-MAHR FAQs
1.Q: Are there related parts with more keys or different features?
A: Microchip offers multi-key capacitive sensors (e.g., 2-key/4-key variants) and proximity sensors in similar packages. Check their portfolio for alternatives.
2.Q: What package does this capacitive touch sensor use?
A: It comes in an 8-pin UDFN EP (Ultra-Thin DFN Exposed Pad) package, measuring 2mm x 2mm x 0.55mm (max height).
3.Q: Does this Microchip touch sensor meet automotive or PPAP standards?
A: No, this part is not automotive-qualified and does not support PPAP documentation.
4.Q: What is the recommended operating voltage for this capacitive touch sensor?
A: The recommended supply voltage range is 1.88V to 5.5V, with logic levels defined at 2.3V (min high output) and 0.5V (max low output).
5.Q: What are the absolute maximum ratings for this touch sensor?
A: Do not exceed 5.5V supply voltage, -40°C to +85°C operating temperature, and 50pF load capacitance. Exceeding these may damage the device.
6.Q: What are typical applications for this Microchip capacitive touch sensor?
A: It is used in consumer electronics (buttons, sliders), IoT devices, home appliances, and industrial control panels requiring reliable touch input.
7.Q: What are the key features of this 1-key capacitive touch sensor?
A: Key features include 14-bit resolution, 1.8V–5.5V operating voltage, 50pF max load capacitance, 100ms response time, spread spectrum support, and -40°C to +85°C temperature range.
8.Q: What is the pinout configuration of the Microchip 8-UFDFN capacitive touch sensor?
A: The device has 8 pins in a UDFN EP (Exposed Pad) package. Pin functions include power supply (VDD), ground (GND), touch input/output, and configuration pins. Refer to the datasheet for the exact pinout diagram.
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