Patent ID: 7519344

Claim:
An apparatus comprising: a common mode rejection amplifier including first and second input transistors to form a first differential input stage, and third and fourth input transistors to form a second differential input stage, the first and second differential input stages coupled in parallel; a plurality of low pass filters coupled to the common mode rejection amplifier to produce a band pass amplifier response; and an input amplifier having first and second differential outputs; wherein the plurality of low pass filters comprises first and second low pass filters coupled to receive signals from the first differential output of the input amplifier, and third and fourth low pass filters coupled to receive signals from the second differential output of the input amplifier, and wherein the first and third low pass filters are coupled to provide signals to the first and second input transistors, respectively, of the first differential input stage, and the second and fourth low pass filters are coupled to provide signals to the third and fourth input transistors, respectively, of the second differential input stage.