Sensor technology allows gloved touch tracking

Single layer, multi-touch sensors are now supported by the TrueTouch Gen4X touchscreen controller family from Cypress. It leverages the company’s Single-Layer Independent Multi-touch (SLIM) sensor structures. The controller also adds support for the company’s tracking of multiple fingers in gloves.

The TrueTouch Gen4X TMA445 controller is claimed to deliver best-in-class accuracy and linearity for fingers of different sizes and gloves of various materials and thicknesses, including ski gloves. It automatically switches between glove and finger tracking without requiring the user to switch settings. They are also claimed to provide industry-leading water tolerance for operation in rain, condensation, or sweat, and best-in-class immunity to electronic noise from aftermarket chargers and displays.

Immunity to charger noise is up to 35V peak-to-peak (Vpp) from 1 to 500kHz, with a 0.5mm cover lens and a 9mm-wide finger. The patented DualSense technology executes both self-capacitance and mutual-capacitance measurements in the same device. The Gen4X family is based on a 32bit ARM Cortex M-Core processor that is known for high-efficiency MIPS/mW. The controller averages low power consumption of 12mW in active mode and 15uW in deep-sleep mode.

The controller is available in mobile-friendly 44pin and 48pin QFN packages.

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