| 摘要 |
The present invention relates to a hybrid microphone and, more specifically, to a microphone which can improve sensitivity without adding an additional circuit. To achieve the above purpose, according to an embodiment of the present invention, the microphone comprises: a sound detecting module which comprises a vibrating film which vibrates by a sound introduced from the outside and outputs a capacitance signal and a piezo-resistant element which outputs piezo-resistant signals by the pressure of the sound; and a semiconductor chip which is electrically connected to the sound detecting module, receives the capacitance signal and the piezo-resistant signals from the sound detecting module and includes an amplifier which amplifies the capacitance signal and the piezo-resistant signal into electrical signals. The amplifier comprises: a non-inverted input terminal or an inverted input terminal which receives the capacitance signal; a first resistor which is connected to the inverted input terminal and is connected to the piezo-resistant element; an output terminal which outputs the electrical signals by amplifying the capacitance signal and the piezo-resistant signal into the electrical signals; and a second resistor which is connected through the inverted input terminal and the piezo-resistant element and is connected to the output terminal. |
