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The LDS6040 is a programmable touch controller with integrated VibeTonz®-Ready haptics driver and keypad LED drivers for use with capacitive sensor arrays implementing touch-based input controls including sliders, scroll wheels, and buttons. Featuring 15 sensor inputs, the LDS6040 provides fast update rates of 2ms per sensor input with on-chip automatic calibration logic continuously monitoring the environment to adjust ambient baseline levels to increase touch accuracy.

Eight of the 15 sensor inputs are configurable as LED drivers capable of driving up to 8mA of current, with 16mA available for a single LED by connecting to two LED drivers simultaneously. LED dimming may be configured over various transition times, with 32 dimming steps available at maximum current drive. Automatic activation of LED with a valid touch event is achieved by associating an LED driver to a sensor input, alleviating the need for the host processor to turn on the LED.

The device operates with a 1.8V touch supply voltage and LED and haptics supply voltage ranges of 3V to 5V. Consuming less than 150uW (typical) of power in full power mode (haptics in shutdown, no LEDs driving), the LDS6040 enables extremely low power consumption in full power mode. Both SPI-compatible and I2C-compatible interfaces are supported with a general-purpose input/output (GPIO) and interrupt output for additional communication with the host processor. The LDS6040 is packaged in a 5mm x 5mm 40ld TQFN package with maximum thickness of 0.8mm.