Analog amplifier for recovering abnormal operation of common mode feedback

An analog variable amplifier comprising:

• a first amplifier stage configured to amplify a bias current to output a first output voltage and a second output voltage that respectively depend on a magnitude of a first input voltage and a second input voltage;
• a second amplifier stage configured to receive the first output voltage and the second output voltage of the first amplifier stage as inputs and to amplify the received first output voltage and the second output voltage;
• and
• at least one auxiliary bias current source coupled to a first electrical connection between the first amplifier stage and the second amplifier stage through which the second amplifier stage receives the first output voltage, and coupled to a second electrical connection between the first amplifier stage and the second amplifier stage through which the second amplifier stage receives the second output voltage,
• wherein the at least one auxiliary bias current source causes that:
• a first predetermined current is drawn at the first electrical connection between the first amplifier stage and the second amplifier stage through which the second amplifier stage receives the first output voltage, and
• a second predetermined current is drawn at the second electrical connection between the first amplifier stage and the second amplifier stage through which the second amplifier stage receives the second output voltage, and
• wherein the first electrical connection and the second electrical connection are arranged independently from each other.