Patent ID: 7088789

Claim:
An apparatus for providing a multi-mode interface between a baseband receiver and radio frequency (RF) circuitry, the RF circuitry translating incoming RF signals to baseband for the baseband receiver, the apparatus comprising: a first input terminal, for receiving an incoming single-ended voltage signal; a second and third input terminal, for receiving an incoming pair of differential voltage signals; a fourth and fifth input terminal, for receiving an incoming pair of differential current signals; a first differential-to-single-ended converter, coupled to the fourth and the fifth input terminals, receiving the incoming differential current signal pair as a first input pair, for converting the first input pair into a first single-ended voltage signal; a second differential-to-single-ended converter, coupled to the second and the third input terminals, receiving the incoming differential voltage signal pair as a second input pair, for converting the second input pair into a second single-ended voltage signal; and an analog-to-digital converter, coupled to the first input terminal as well as the first and the second differential-to-single-ended converters, selectively receiving the incoming single-ended voltage signal, the first single-ended voltage signal, or the second single-ended voltage signal as a third input, for converting the third input into a digital signal to be further processed by the baseband receiver.