Novel touchscreen controller enables touchscreens to function seamlessly with noisy battery chargers
February 14, 2011 // Paul Buckley
Cypress Semiconductor Corp., has unveiled a new feature for the company’s TrueTouch touchscreen controllers that enables touchscreens in handsets, cameras, GPS systems and other mobile systems to function seamlessly while connected to noisy chargers. Low-cost, third-party and after-market battery chargers emit large levels of common-mode noise that adversely affects touchscreen performance, often resulting in inaccurate touch readings or phantom touches.
Cypress’s new Charger Armor feature allows TrueTouch touchscreens to operate normally in the presence of AC noise.
The new feature, which is available in Cypress’s CY8CTMA3XX TrueTouch family, solves a common problem that mobile device manufacturers are struggling to overcome. Low cost chargers lack critical noise suppression components, and can generate tens of volts (peak to peak) across the frequency spectrum of 1 Hz to 1 MHz. The voltage spikes can go directly into the touch panel during the presence of touch, impacting touch performance. As such, many of the mobile phone vendors have worked together to create EN 62684 and EN301489, standards which regulate the noise spectrum for battery chargers. While Cypress’s TrueTouch technology alone can suppress noise at the levels of these standards, Charger Armor allows Cypress to go beyond the standards to deliver truly revolutionary charger noise immunity to the market, enabling mobile devices to operate with the lowest-cost chargers.
The Charger Armor feature is available today, and Cypress expects customers to introduce systems with Charger Armor in the first half of 2011.
For more information about the TrueTouch solution visit www.cypress.com/go/TrueTouch
What's that smell? An app for that soon, says Sensirion
July 25, 2014
With the acquisition of neighbouring cloud business Koubachi AG, Zurich-based company Sensirion is gearing up to meet the ...
GE phosphor powder creates more vibrant LED displays
Foremost Electronics to distribute NKK's switches in the UK
Traffic light switches to smart mode
Sony investing in stacked image sensor manufacturing capacity
The Filter Wizard: 'three-legs' and the 4-20 mA current loop
July 24, 2014
Kendall Castor-Perry of Cypress Semiconductor, otherwise known as The Filter Wizard, looks at some tricks for implementing ...
Set-top boxes morphing into MHGs
Imagination positions itself for 802.11ah for the Internet of Things
Smartwatches suck, says Pebble backer
- Testing GPS with a Simulator
- DSM presents: Select the best plastic for DDR4
- Dual 13A μModule Regulator with Digital Interface for Remote Monitoring & Control of Power
- Exploring the Business Model Evolution of High-Tech Equipment Manufacturers
InterviewCEO interview: China, not Apple, is way to go, says mCube CEO
Ben Lee, CEO of MEMS startup mCube, explains why he wants to spend $37 million on being a supplier of sensors to Chinese ODMs and avoiding a design win with Apple or Samsung.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Altium Ltd is offering EETimes Europe's readers the chance to win one TASKING VX-Toolset for ARM Cortex-M Premium Edition, normally licensed for 2.395 Euros, for ultra-rapid prototyping and code development around ARM Cortex-M based microcontrollers.
The VX-toolset for ARM is the first TASKING compiler suite to receive the Software Platform technology, which is seamlessly...Read more
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.