Amplifier circuit and method of signal amplification
First Claim
Patent Images
1. An amplifier circuit, comprising:
- a first amplifier, comprising a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal, wherein the first terminal is coupled to a first external voltage, the second terminal is coupled to a negative voltage, the third terminal is coupled to a ground reference voltage, the fourth terminal is coupled to a first input signal, the fifth terminal is coupled to a first speaker;
a second amplifier, comprising a sixth terminal, a seventh terminal, an eighth terminal, a ninth terminal, and a tenth terminal, wherein the sixth terminal is coupled to the first external voltage, the seventh terminal is coupled to the negative voltage, the eighth terminal is coupled to the ground reference voltage, the ninth terminal is coupled to a second input signal, the tenth terminal is coupled to a second speaker; and
a charge pump, coupled to the first amplifier and the second amplifier, providing the negative voltage transformed from a second external voltage.
1 Assignment
0 Petitions
Accused Products
Abstract
An amplifier circuit and a method of signal amplification are provided. The amplifier circuit includes a first amplifier and a charge pump. The first amplifier includes a first terminal, a second terminal, and a third terminal. The first terminal is coupled to a first external voltage. The second terminal is coupled to a negative voltage. The third terminal is coupled to a ground reference voltage. The charge pump is coupled to the first amplifier for providing the negative voltage transformed from a second external voltage.
-
Citations
15 Claims
-
1. An amplifier circuit, comprising:
-
a first amplifier, comprising a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal, wherein the first terminal is coupled to a first external voltage, the second terminal is coupled to a negative voltage, the third terminal is coupled to a ground reference voltage, the fourth terminal is coupled to a first input signal, the fifth terminal is coupled to a first speaker; a second amplifier, comprising a sixth terminal, a seventh terminal, an eighth terminal, a ninth terminal, and a tenth terminal, wherein the sixth terminal is coupled to the first external voltage, the seventh terminal is coupled to the negative voltage, the eighth terminal is coupled to the ground reference voltage, the ninth terminal is coupled to a second input signal, the tenth terminal is coupled to a second speaker; and a charge pump, coupled to the first amplifier and the second amplifier, providing the negative voltage transformed from a second external voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method of signal amplification for an amplifier circuit which has a first amplifier and a second amplifier, comprising:
-
providing a first external voltage and a second external voltage to the amplifier circuit; providing a negative voltage transformed from the second external voltage to the first amplifier and the second amplifier; providing a ground reference voltage to the first amplifier and the second amplifier; amplifying a first input signal received by the first amplifier and outputting the amplified first input signal; and amplifying a second input signal received by the second amplifier and outputting the amplified second input signal. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
Specification