...
首页> 外文期刊>SID International Symposium: Digest of Technology Papers >A Low-Power Fast Readout Circuit using a Dual-Mode Sensing Algorithm for Medium-Size Capacitive Touch Screen Panels
【24h】

A Low-Power Fast Readout Circuit using a Dual-Mode Sensing Algorithm for Medium-Size Capacitive Touch Screen Panels

机译:用于中型电容触摸屏面板的双模式感应算法的低功耗快速读出电路

获取原文
获取原文并翻译 | 示例
           

摘要

A new readout circuit architecture for capacitive touch screen panels (TSPs) is introduced to enhance the reporting rate and to improve the signal to noise ratio (SNR) with low power consumption. The proposed Dual-Mode Sensing (DMS) method finds the actual touch spots without feedback from the TSP to the MCU. In addition, the effect of noise coupled to the touch signal is reduced owing to the averaging effect of the proposed continuous-time integration (CTI) technique. The circuit was designed for a 0.35μm CMOS technology. The proposed sensing scheme shows a 257 Hz reporting rate under a simultaneous 10 touch condition on a 10.1 inch TSP, providing a 33 dB SNR with power consumption of 679 μW from a 3.3V supply.
机译:引入了一种用于电容式触摸屏面板(TSP)的新的读出电路架构,以提高报告速率并以低功耗提高信噪比(SNR)。所提出的双模式传感(DMS)方法可找到实际的触摸点,而无需从TSP反馈到MCU。另外,由于所提出的连续时间积分(CTI)技术的平均效果,降低了耦合到触摸信号的噪声的影响。该电路设计用于0.35μmCMOS技术。拟议的传感方案显示了在10.1英寸TSP上同时进行10次触摸条件下的报告频率为257 Hz,提供3.3 dB SNR,3.3V电源的功耗为679μW。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号