Press Releases
AK4185 - Micro power consumption touch screen controller |
| Tokyo Japan, March 5 2008 - AKM Semiconductor (AKM), the world’s premier supplier of audio ICs for professional and consumer markets, today launched the AK4185, a low operating voltage resistive touch screen controller (TSC). This new device includes both 4-wire and 5-wire touch screen control interfaces. It is an enhanced version of the AK4182A, which is a standard device for smart-phone touch panels, reducing PCB space by 80% using a micro CSP package. The AK4185 is software compatible with the AK4182A.
An internal oscillator increases the analog to digital conversion speed, and the sampling rate is 2.4 times faster compared to conventional products. This high speed operation enables faster coordinate transformation. The AK4185 has both an automatic continuous measurement and a measurement data calculation function. The functions that normally require external processing, such as Min/Max value delete and averaging procedures are processed by the AK4185. In addition, a new sequential mode achieves short coordinate measurement time while greatly reducing the external processor overhead. The AK4185 features a 4-wire and 5-wire resistive film touch panel interface with position detection and pen pressure measurement (only for 4-wire system), temperature detection, external input detection, automatic power-down, and an SPI control interface. The sampling rate is up to 300kHz. The AK4185 operates off a of single power supply ranging from 1.6V to 3.6V, allowing a direct interface to low-voltage application processors. Ultra low power consumption of 240ìA ensures low system power operation. Evaluation boards and samples are available now. For more information or editorial contacts about this product, call AKM toll free at (888) 256-7364, or send an inquiry to icinfo@akm.com. |
