Configurable Touch Controller Front End With Switch Capacitor Networks

The receiver is designed with a switch capacitor network that can be reconfigured through switching to support multiple sensing modes including differential mutual capacitance, single-ended mutual capacitance, differential self-capacitance, and single-ended self-capacitance sensing. This universal design allows a single receiver architecture to replace multiple custom designs, achieving adaptability while maintaining optimized performance across different sensing modes

The receiver incorporates dynamically reconfigurable switch capacitor networks that can change their configuration based on the required sensing mode. The switches allow the capacitor connections to be reorganized in real-time, enabling the system to adapt to different touch panel designs and sensing requirements without physical reconfiguration or custom hardware

Multiple sensing mode functionalities are merged into a single receiver architecture by combining switch capacitor networks that can be reconfigured through switching. Instead of having separate receivers for each sensing mode, the patent merges differential and single-ended mutual/self-capacitance sensing capabilities into one unified structure, reducing overall system complexity while maintaining adaptability

The receiver achieves multiple operating modes by changing the configuration parameters of the switch capacitor network rather than requiring fundamentally different circuit topologies. By controlling the switch states, the same physical components can operate in different modes, simplifying the device structure while providing configurability