description of products:
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.
product feature:
- Configurations:Commsmode
- NumberofKeys:1to5keys(or1to4keysplusaGuardChannel)
- Technology:Patentedspread-spectrumQTouchADCcharge-transfer
- KeyOutlineSizes:6mm×6mmorlarger(panelthicknessdependent);widelydifferentsizesandshapespossible
- LayersRequired:One
- ElectrodeMaterials:Etchedcopper;Silver;Carbon;IndiumTinOxide(ITO)
- PanelMaterials:Plastic;Glass;Composites;Paintedsurfaces(lowparticledensitymetallicpaintspossible)
- Upto10mmglass(electrodesizedependent)
- Upto5mmplastic(electrodesizedependent)
- KeySensitivity:IndividuallysettableusingsimplecommandsoverI2Cinterface
- Interface:I2Cslavemode(400kHz).Discretedetectionoutputs
- Self-calibration
- Auto-driftcompensation
- Noisefiltering
- AdjacentKeySuppression®(AKS®)–uptothreegroupspossible
- MoistureTolerance:Increasedmoisturetolerancebasedonhardwaredesignandfirmwaretuning
- PowerSaving:LowPower(LP)modesupportsbothLowPowerandDeepSleepmodes
- Power:1.8Vto5.5V
- 12-ballWLCSPRoHS-compliantIC
- 20-pinVQFNRoHS-compliantIC
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