AT42QT1050-MMHR More Semiconductors - ICs by Microchip Technology
| Status: | Active |
|---|---|
| Series: | AT42QT1050 |
| RoHS: | Compliant |
The Atmel(R) AT42QT1050 is a QTouchADC(TM) sensor driver. The device can sense from one to five keys, dependent on mode. The QT1050 includes all signal processing functions necessary to provide stable sensing under a wide variety of changing conditions, and the outputs are fully debounced. Only a few external parts are required for operation and no external Cs capacitors are required. The QT1050 modulates its bursts in a spread-spectrum fashion in order to heavily suppress the effects of external noise, and to suppress RF emissions. The QT1050 uses a QTouchADC method of acquisition. This provides greater noise immunity and eliminates the need for external sampling capacitors, allowing touch sensing using a single pin.
Features
| Configurations: Comms mode |
| Number of Keys: 1 to 5 keys (or 1 to 4 keys plus a Guard Channel) |
| Technology: Patented spread-spectrum QTouchADC charge-transfer |
| Key Outline Sizes: 6 mm × 6 mm or larger (panel thickness dependent); widely different sizes and shapes possible |
| Layers Required: One |
| Electrode Materials: Etched copper; Silver; Carbon; Indium Tin Oxide (ITO) |
| Panel Materials: Plastic; Glass; Composites; Painted surfaces (low particle density metallic paints possible) |
| Up to 10 mm glass (electrode size dependent) |
| Up to 5 mm plastic (electrode size dependent) |
| Key Sensitivity: Individually settable using simple commands over I2C interface |
| Interface: I2C slave mode (400 kHz). Discrete detection outputs |
| Self-calibration |
| Auto-drift compensation |
| Noise filtering |
| Adjacent Key Suppression® (AKS®) – up to three groups possible |
| Moisture Tolerance: Increased moisture tolerance based on hardware design and firmware tuning |
| Power Saving: Low Power (LP) mode supports both Low Power and Deep Sleep modes |
| Power: 1.8 V to 5.5 V |
| 12-ball WLCSP RoHS-compliant IC |
| 20-pin VQFN RoHS-compliant IC |
Specifications
| Product Type | Proximity/Keys/Slider |
|---|---|
| Input Channels | 5 |
| Max Number of keys | 5 |
| Slider | No |
| Proximity detection | No |
| Output Channels | 0 |
| Measurement Principle | E-Field |
| Report Rate (pps) | 0 |
| Number of Touches | 0 |
| Power Modes | 0 |
| Interface | I2C |
| I/O, LED Drivers | 0 |
| Other Features | Signal Guard/Driven Shield |
| Temp Range | Array |
| Voltage Min. (V) | 1.80 |
| Voltage Max. (V) | 5.50 |
| Pins | Packaging | 20 | VQFN |
| Packing Media | Tape and reel (6000) |
Resources
Data Sheets |
|---|
| AT42QT1050 - Complete Datasheet |
Brochures |
|---|
| Product Selection Guide |
User Guides |
|---|
| Ultra Low Power BLE 4.1 SoC - Hardware Design Guidelines - SAMB11 Hardware Design Guide. |
| Atmel AT08801: Single Key Configurator - User Guide |
| Multifunction Compact Keyboard User Guide |
Environmental Information
| JEDEC Indicator | e4 |
|---|---|
| ROHS | Compliant |
| China EFUP | Compliant |
| Device Weight (g) | 0.0189 |
| Shipping Weight (kg) | 0.105 |
| Lead Count | 20 |
| Package Type | VQFN |
| Package Width or Size | 3x3x0.85mm |
| Soldering Composition | NiPdAu |
Alternative Descriptions
| 5 Channel Qtouch Adc I2C Touch Sensor Ic 20 Vqfn 3X3X0.85Mm T/R Rohs Compliant: Yes |Microchip AT42QT1050-MMHR | Newark Electronics |
| Touch Sensor Capacitive 1 Key 1.8V to 5.5V Surface Mount 20-Pin VQFN T/R | Avnet America |
| 5 Channel QTouch ADC I2C Touch Sensor IC | Microchip Technology |
Frequently Asked Questions
Where can I find additional details, specifications and documents for a AT42QT1050-MMHR?
Additional datasheets, footprints and schematics for AT42QT1050-MMHR are listed on our Part Details page. You can also find images and similar parts to AT42QT1050-MMHR on this page.
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What category does AT42QT1050-MMHR fall under?
The AT42QT1050-MMHR is listed under Semiconductors - ICs > More Semiconductors - ICs.
Can I view similar or alternative parts?
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Is the AT42QT1050-MMHR RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Microchip Technology.
Which authorised distributors for AT42QT1050-MMHR have stock available?
Authorised distributors including Newark Electronics, Avnet America, Microchip Technology, EBV Elektronik and Avnet Silica have stock available or on a lead time for AT42QT1050-MMHR.
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