A Premier B2B Part Search
Microchip Technology AT42QT2120SU Capacitive Touch Sensor
The AT42QT2120 is a capacitive touch sensor IC designed for versatile detection of up to 12 keys, including options for proximity sensing, guard channels, and sliders or wheels. It uses patented spread-spectrum QTouchADC technology, providing high noise immunity and stable sensing under varied environmental conditions. The device supports both serial communication mode via I²C and standalone operation, making it ideal for user interfaces in industrial, automotive, and consumer electronics. Features include auto calibration, flexible key configuration, adjustable sensitivity, and low power consumption. Compact package options include 20-pin SOIC, TSSOP, and VQFN forms.
Microchip Technology AT42QT2120SU Capacitive Touch Sensor Specifications:
- Number of Keys: 1 to 12 (comms mode), 1 to 5 (standalone mode)
- Technology: Spread-spectrum QTouchADC
- Output Lines: Up to 10 channels config (comms), 1 to 5 (standalone)
- Key Outline Sizes: ≥5 mm x 5 mm (panel thickness dependent)
- Key Spacings: ≥6 mm (center to center)
- Key Design: Solid or ring-shaped electrodes, various sizes
- Wheel Size: 30-50 mm diameter, segment width 12 mm, up to 80 mm wheel diameter
- Slider Length: 50-100 mm, width approx. 12 mm, can be arc or irregular shape
- Substrate Materials: FR-4, CEM-1, PET, glass
- Panel Thickness: Up to 15 mm glass, 10 mm plastic keys; slider/wheel up to 4 mm glass, 3 mm plastic
- Sensitivity: Individually adjustable in comms mode, fixed in standalone
- Signal Processing: Self-calibration, noise filtering, adjacent key suppression
- Power Supply: 1.8V to 5.5V
- Communication Interface: I²C (400 kHz) compatible, change status pin
- Package Types: 20-pin SOIC, TSSOP, VQFN
- Features: Auto drift compensation, hysteresis 12.5%, configurable thresholds, low power modes, gesture support
Buy the Atmel AT42QT2120 U+2013 Reliable Capacitive Touch Sensors for Industrial Applications
Purchase the Atmel AT42QT2120 capacitive touch sensor online today—engineered for reliable detection of multiple keys, proximity, and sliders. This high-performance IC features spread-spectrum technology to ensure noise immunity, auto calibration for consistent performance, and compact packages suitable for industrial design. Whether integrating into touchscreen panels, control interfaces, or automation systems, the QT2120 offers flexibility, durability, and energy efficiency. Order now to enhance your device's user interface with trusted capacitive sensing technology and enjoy fast worldwide shipping.
Get Atmel AT42QT2120 today—built for precision and long-lasting durability in industrial touch interfaces.
Frequently Asked Questions
Where can I buy Microchip Technology AT42QT2120SU?
You can click on the BUY or RFQ button to purchase AT42QT2120SU from an authorized Microchip Technology distributor.
How do I troubleshoot issues or seek technical support for part AT42QT2120SU?
You can download the AT42QT2120SU datasheet or visit the Microchip Technology website for support.
Who is the manufacturer of AT42QT2120SU?
Microchip Technology