Patent ID: 11893186
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 20:
21. An input sensing device, comprising:
a sensing driver that includes analog front-end circuits that separate sensing signals of different frequencies that are received from sensing electrodes, and generates digital sensing data based on a result of a recombination of the separated sensing signals,
wherein each of the analog front-end circuits comprises:
a charge amplification component that differentially amplifies a first sensing signal and a second sensing signal that are respectively received by a first input terminal and a second input terminal, and outputs a first differential signal and a second differential signal through a first output terminal and a second output terminal, respectively;
a filter component that filters the first differential signal and outputs a first filtered signal and a second filtered signal in different frequency bands, and filters the second differential signal and outputs a third filtered signal and a fourth filtered signal in different frequency bands;
a buffer component that outputs a first combined differential signal and a second combined differential signal based on the first to fourth filtered signals; and
an analog-to-digital converter that outputs digital sensing data in response to the first combined differential signal and the second combined differential signal.