The MXT288UD-AM and the MXT144UD-AM devices have low-power mode, weatherproof operation and glove touch detection for multi-function displays, touchpad and smart surfaces.
It is possible to place secondary touch surfaces in both the interior and exterior of motor vehicles. The MXT288UD family is available in a 7x7 mm automotive-grade VQFN56 package, allowing suppliers to reduce board space by 75%, and minimize BoM, while providing reliable touch performance. Devices in the new range feature a low power wait-for-touch mode that consumes less than 50 µA, while still remaining responsive, even if the display is switched off.
MXT288UD-AM and MXT144UD-AM devices can detect and track multi-finger thick gloves through a range of overlay materials and thicknesses, even when moisture is present. The dielectric constant of overlay materials can often limit touch detection, but the new devices offer a unique solution for the reliable detection and tracking of multiple touches with high SNR and a proprietary differential mutual acquisition scheme.
The MXT288UD family provides a turnkey solution with firmware that has been developed according to Automotive SPICE processes and is AEC-Q100 qualified. Software tools include the maXTouch Studio and a maXTouch analyzer. For the MXT288UD, the hardware offered includes an evaluation kit that features a PCB and a 5” capacitive touch panel. The MXT144UD’s evaluation kit has a PCB and a 2.9” capacitive touch pad. A bridge PCB woth both evaluation kits with a USB connection to interface to a computer when running maXTouch Studio.
Pricing and Availability
The MXT288UD touch controller family is available today in mass production. Additional information is available through Microchip sales representatives, authorized worldwide distributors, and on Microchip’s website.