description of products:
The AT42QT1070 (QT1070) is a digital burst mode charge-transfer capacitive sensor driver. The device can sense from one to seven keys, dependent on mode.
The QT1070 has the optimized architecture where no external components are required and only 1-pin per channel. It includes all signal processing functions necessary to provide stable sensing under a wide variety of changing conditions, and the outputs are fully debounced.
product feature:
- Commsmode
- Standalonemode
- Commsmode:1–7keys(or1–6keysplusaGuardChannel)
- Standalonemode:1–4keysplusafixedGuardChannelonkey0
- NumberofI/OLinesinStandalonemode:5outputs
- Technology:Patentedspread-spectrumcharge-transfer
- KeyOutlineSizes:6mmx6mmorlarger(panelthicknessdependent);widelydifferentsizesandshapespossible
- PCBLayersRequired:One
- ElectrodeMaterials:Etchedcopper;Silver;Carbon;IndiumTinOxide(ITO)
- PanelMaterials:Plastic;Glass;Composites;Paintedsurfaces(lowparticledensitymetallicpaintspossible
- PanelThickness:Upto10mmglass;Upto5mmplastic(electrodesizedependent)
- Commsmode:individuallysettableviasimplecommandsoverI2C-compatibleinterface
- Standalonemode:settingsarefixed
- I2C-compatibleslavemode(400kHz)
- Discretedetectionoutputs
- SignalProcessing:
- Self-calibration
- Autodriftcompensation
- Noisefiltering
- AdjacentKeySuppression®(AKS®)–uptothreegroupspossible
- PowerSupply:1.8V–5.5V
- 14-pinSOICRoHScompliantIC
- 20-pinVQFNRoHScompliantIC
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