| 摘要 |
A sensing circuit for touch panel is disclosed. The sensing circuit includes a switching device, a passive device, a sensing device and a transforming unit. The switching device receives a first control signal and outputs the first control signal according to a second control signal. The passive device couples to the switching device. The sensing device couples to the switching device to form a node, receives the first control signal to generate a reference voltage on the node, and changes the value of the reference voltage to generate a target voltage according to a pressure exerting on a preset position of the surface of the touch panel by a user. The transforming unit receives the target voltage and generates an output current according to the target voltage.
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