Operational amplifier and related noise separation method...

Details Operational amplifier and related noise separation method... Operational amplifier and related noise separation method...

2006-11-08

2009-02-10

Choe, Henry K (Department: 2817)

Amplifiers

With periodic switching input-output

C330S311000

Reexamination Certificate

active

07489187

ABSTRACT:
An amplifier includes: an input stage for receiving an input signal to generate a first signal corresponding to a first band; a first modulator coupled to the input stage for modulating the first signal to generate a second signal corresponding to a second band; an amplifier stage coupled to the first modulator for processing the second signal to generate a third signal, wherein the third signal includes a fourth signal corresponding to the second band and a first interference signal corresponding to the first band; and a second modulator coupled to the amplifier stage for modulating the third signal to generate a fifth signal corresponding to the first band and to generate a second interference signal corresponding to the second band.

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YuQing Yang, et al. “A 114-dB 68-mW Chopper Stabilized Stereo Multibit Audio ADC in 5.62 mm2,” IEEE Journal of Solid-State Circuits, vol. 38, No. 12, Dec. 2003.

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