AT42QT1110-AZ IC Sensors by Microchip Technology
| Status: | Active |
|---|---|
| Series: | AT42QT1110 |
| RoHS: | Compliant |
The Microchip AT42QT111x standarized capacitive touch controller with configurable 11-key QTouch buttons with guard channels for reliable capacitive user interfaces. It can be used in any application that requires buttons. Its keys can be constructed in different shapes and sizes. The device includes all signal processing functions necessary to provide stable sensing under a wide variety of changing conditions. The outputs are fully debounced. Only a few external components are required for operation.
The 42AT1110 operates from 3V - 5.5V, whereas the 42QT1111 operates from 1.8V - 5.5V
The 42AT1110 features an "Extended Pulse Time" configuration
Features
| Up to 11 QTouch® channels |
| Measurement of keys triggered either by a signal applied to the SYNC pin or at regular intervals timed by the AT42QT111x internal clock |
| Keys measured sequentially for better performance, or in parallel groups for faster operation |
| Raw data for key touches can be read as a report over the SPI interface |
| Discrete, configurable “Detect” outputs indicating individual key touch (7-key mode) |
| Device configuration can be stored in EEPROM |
| Patented spread-spectrum charge-transfer (direct mode) |
| Key outline sizes: 6 mm × 6 mm or larger (panel thickness dependent); widely different sizes and shapes possible, including solid or ring shapes |
| Key Spacings: 7 mm center-to-center or more (panel thickness dependent) |
| PCB layers required: One |
| 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 individually configurable via simple commands over serial interface |
| Patented Adjacent Key Suppression® (AKS®) technology to enable accurate key detection |
| Interface: Full-duplex SPI slave mode (1.5 MHz), CHANGE pin, discrete detection outputs |
| Increased moisture tolerance based on hardware design and firmware tuning |
| AT42QT1110: 3V – 5.5V |
| AT42QT1111: 1.8V – 5.5V |
| 32-pin 5 × 5 mm QFN RoHS compliant |
| 32-pin 7 × 7 mm TQFP RoHS compliant |
| Signal Processing: Self-calibration, auto drift compensation, noise filtering, AKS technology |
| Applications: Consumer and industrial applications, such as TV, media player |
Specifications
| Product Type | Proximity/Keys/Slider |
|---|---|
| Input Channels | 11 |
| Max Number of keys | 11 |
| Output Channels | 0 |
| Report Rate (pps) | 0 |
| Number of Touches | 0 |
| Power Modes | 0 |
| Interface | SPI |
| I/O, LED Drivers | 0 |
| Voltage Min. (V) | 3.00 |
| Voltage Max. (V) | 5.50 |
| Pins | Packaging | 32 | TQFP |
| Temp Range | -40C to +125C |
| Packing Media | Tape and reel (2000) |
Last 6 months Inventory & Pricing History
Resources
Data Sheets |
|---|
| AT42QT1110 - Complete Datasheet |
Brochures |
|---|
| Product Selection Guide |
Environmental Information
| JEDEC Indicator | e3 |
|---|---|
| ROHS | Compliant |
| China EFUP | Compliant |
| Device Weight (g) | 0.3383 |
| Shipping Weight (kg) | 0.410625 |
| Lead Count | 32 |
| Package Type | TQFP |
| Package Width or Size | 7x7x1.0mm |
| Soldering Composition | Matte Tin |
Alternative Descriptions
| QTouch 11 Key Touch Sensor IC QFP32 T&R | Microchip Technology |
| Touch Sensor Capacitive 11 Key 3V to 5.5V Surface Mount 32-Pin TQFP EP Tray | EBV Elektronik |
Frequently Asked Questions
Where can I find additional details, specifications and documents for a AT42QT1110-AZ?
Additional datasheets, footprints and schematics for AT42QT1110-AZ are listed on our Part Details page. You can also find images and similar parts to AT42QT1110-AZ on this page.
What pricing and inventory information can I view?
Distributor pricing and stock information is available for AT42QT1110-AZ on our Product Comparison page. Access via the 'View Pricing & Stock' button to view AT42QT1110-AZ price breaks, MOQs, lead times, inventory and SKUs from distributors.
What category does AT42QT1110-AZ fall under?
The AT42QT1110-AZ is listed under Semiconductors - ICs > IC Sensors > Capacitive Touch Sensors.
Can I view similar or alternative parts?
You can view similar parts to AT42QT1110-AZ when available in the Capacitive Touch Sensors range under the specifications section at the bottom of the details page.
Who can I contact for technical support of the product?
Submit any questions directly to the customer support team of the distributor listing the product. For the AT42QT1110-AZ you can contact the distributor directly for product support, shipping queries etc.
Is the AT42QT1110-AZ RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Microchip Technology.
Which authorised distributors for AT42QT1110-AZ have stock available?
Authorised distributors including Microchip Technology, EBV Elektronik and Avnet Silica have stock available or on a lead time for AT42QT1110-AZ.
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