18894157. AUDIO AMPLIFIER CIRCUIT (ROHM CO., LTD.)
AUDIO AMPLIFIER CIRCUIT
Organization Name
Inventor(s)
Mitsuteru Sakai of Kyoto-shi (JP)
AUDIO AMPLIFIER CIRCUIT
This abstract first appeared for US patent application 18894157 titled 'AUDIO AMPLIFIER CIRCUIT
Original Abstract Submitted
In an audio amplifier circuit, a power supply terminal receives a power supply voltage. A voltage source generates an internal power supply voltage obtained by multiplying the power supply voltage by a first gain and a bias voltage obtained by multiplying the power supply voltage by a second gain. An input gain circuit amplifies an analog audio signal with reference to the bias voltage. The input gain circuit has an input stage and a gain stage. A phase compensation capacitor is connected to the gain stage. A withstand voltage protection circuit clamps an output voltage of the gain stage to a predetermined clamp voltage.
