Patent ID: 8476934

Claim:
An apparatus including differential signal detection circuitry with an integrated reference voltage, comprising: current source circuitry to provide at least first and second bias currents, including: a first current source circuit coupled to said differential amplifier circuitry and responsive to a first bias voltage by providing said first bias current; and a second current source circuit coupled to said voltage follower circuitry and responsive to a second bias voltage by providing said second bias current; differential amplifier circuitry coupled to at least said current source circuitry and responsive to at least said first bias current and a differential input signal having a differential input signal magnitude by providing a reference voltage and a first differential output signal phase; and voltage follower circuitry coupled to at least said current source circuitry and responsive to at least said second bias current and a third bias voltage by providing a second differential output signal phase; wherein said first and second differential output signal phases form a differential output signal having a differential output signal magnitude related to a difference between said differential input signal magnitude and said reference voltage.