Bias balancing circuit
AssigneeAmazing Microelectronic Corp.
InventorWei-Cheng Lin
Life of this patent
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Abstract
The invention discloses a bias balancing circuit. The bias balancing circuit is used for balancing an output voltage outputted by an amplifier module. The amplifier module has a variable gain. The bias balancing circuit comprises a comparator and a voltage selector. The comparator is used for comparing the output voltage and a reference voltage, to generate a comparison signal. The voltage selector is used for generating a selected voltage according to the comparison signal. When the variable gain is changed to result in an offset from the output voltage to the reference voltage, the bias balancing circuit is capable of balancing the output voltage toward the reference voltage by the selected voltage.
Claims8
A bias balancing circuit for balancing an output voltage outputted by an amplifier module which has a variable gain, and the bias balancing circuit comprising:
- a comparator, electrically connected to the amplifier module, for comparing the output voltage and a reference voltage, to generate a comparison signal;
- and
- a voltage selector, electrically connected to the comparator and the amplifier module, for generating a selected voltage according to the comparison signal;
- wherein when the variable gain is changed to result in an offset from the output voltage to the reference voltage, the bias balancing circuit is capable of balancing the output voltage toward the reference voltage by the selected voltage.
Dependencies are inferred from the claim text.