The new controllers with custom design touch sensors can be manufactured to unique customer specifications without a minimum order quantity. The ZXY500 is suitable for displays from 5” to around 86” due to its 40V on-board drive signal and proprietary touch sensing algorithms. Noise immunity allows the air gap between the display and the sensor to be decreased, reducing optical parallax. Furthermore, the controller’s high SNR allows the touch sensor to be integrated alongside wireless technologies such as RFID / NFC readers and Qi chargers.
The ZXY500 can support up to 80 simultaneous touches and has improved palm rejection functionality. It also features increased speed, updating touch co-ordinates in just 1ms at the controller output. Each channel on the device can be configured via firmware to operate in transmit or receive mode.
The controller and touch sensor together can be powered from a 5V USB port. The ZXY500 comes with USB output as standard, but also has options for RS232, I2C, SPI and interfaces. The new controllers are Human Interface Device compliant and offer ‘plug-and-play’ operation with later Windows operating systems, and also support Linux and Android versions designed for multi-touch.
The performance and functionality of the controller results from the unique ASIC created by Zytronic specifically for the ZXY500 family. The company invested over $1 million in the development of the new ASIC, which reduced the cost and size of the controller and eliminated the obsolescence risk associated with the use of third-party components for core parts of the design.
The new ASIC’s are also available together with a STM 32-bit ARM Cortex microprocessor loaded with Zytronic’s proprietary touch detection algorithms as a ‘chip set’. Customers who sign a special licence agreement may then be supplied with the core chip set together with the controller schematics and bill-of-materials. Zytronic’s engineers will then help design the controller directly onto a mother board within their device or system.
Zytronic is releasing a family of three ZXY500 controllers optimised for different sizes of touch interface. The 64-channel ZXY500-U-OFF-64 is recommended for sensors of 5” to 20” diagonal, the 128-channel ZXY500-U-OFF-128 for sensors of 20” to 55” and the 256-channel ZXY500-U-OFF-256 for sizes above 55”.