Patent ID: 11881826
Assignee: CIRRUS LOGIC INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. The circuitry according to claim 11, wherein the dummy feedback path is configured to couple the output of the dummy output stage to the input of the amplifier unit during start-up of the amplifier unit to bias the amplifier unit, the circuitry comprising:
a first dummy output stage that is selectively couplable to first and second differential outputs of the first pseudo-differential amplifier;
a first real output stage that is selectively couplable to the first and second differential outputs of the first pseudo-differential amplifier;
a first dummy feedback path for selectively coupling an output of the first dummy output stage to an input of the first pseudo-differential amplifier;
a first real feedback path for selectively coupling an output of the first real output stage to an input of the first pseudo-differential amplifier;
a second dummy output stage that is selectively couplable to first and second differential outputs of the second pseudo-differential amplifier;
a second real output stage that is selectively couplable to the first and second differential outputs of the second pseudo-differential amplifier;
a second dummy feedback path for selectively coupling an output of the second dummy output stage to an input of the second pseudo-differential amplifier; and
a second real feedback path for selectively coupling an output of the second real output stage to an input of the second pseudo-differential amplifier.