The AT42QT1070 and AT42QT2120 devices are user friendly, do not need any firmware design, reduce both component count and cost, and are power efficient. It also has a proximity range of 8-inches for new functions included three- dimensional movements to be added.
The devices remove the need for use of peripheral units and need only one I/O pin for each sensing function. This ensures rapid scan, low current use and immunity to power fluctuations.
They provide a low threshold of entry to incorporate interfaces into home appliances, automotive control panels, TVs, remote controls, set-top boxes and LCD monitors.
The devices support up to 12 channels, 1.8V to 5.5V operating voltage and a communications interface. They also have Adjacent Key Suppression support, self-calibration and auto-drift compensation. They can filter noise, and have optional sleep intervals. The AT42QT1070 supports 7 channels. The AT42QT2120 with 12 channels supports a slider or wheel interface.