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LDS6023
PureTouch™ Capacitance Touch IC with Integrated Keypad LED Drivers
The LDS6023 PureTouch™ controller empowers system designers to create streamlined, attractive and reliable product designs with capacitive touch controls. Integrated LED drivers allow visual feedback to be implemented when a touch occurs, without the need for host intervention.
LDS6023 Features
Versatile, accurate capacitanceto-digital converter (CDC) • 500 kHz sigma-delta CDC • 6 capacitance sensor input channels • 2 ms update rate per active sensor Integrated keypad LED drivers • C3-C5 sensor inputs configurable as keypad LED drivers • 7.75 mA maximum driving current (up to 23 ma available by connecting multiple outputs to a single LED) • Flexible dimming control • Processor-free synchronization with touch events Integrated, automatic calibration algorithms • Environmental compensation • On-chip RAM to store calibration data Integrated touch preference modes • Strongest single touch • Strongest two touches • Unrestricted (all) touches Ultra-low touch sensor power consumption* • Operating mode (typical):
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