Patent ID: 7327406

Claim:
A monolithic integrated circuit comprising: tuner for receiving a radio frequency (RF) television signal, said RF television signal comprising a range of fundamental frequencies from 55 mega hertz (Mhz) to 210 Mhz, said tuner for down converting said RF television signal to an intermediate frequency (IF) television signal, said IF television signal comprising a fundamental frequency below 20 Mhz said tuner comprising, first down conversion circuit coupled to receive said RF television signals comprising fundamental frequencies in an upper range of said RF television signals, said first down conversion circuit for generating a first IF television signal for said upper range of said RF television signals in a first mode; and second down conversion circuit, coupled to said first down conversion circuit and coupled to receive a lower range of said RF television signals, said second down conversion circuit converting said first IF television signal to said fundamental frequency of said IF television signal in said first mode of operation, and said second down conversion circuit converting said lower range of said RF television signals to said fundamental frequency of said IF television signal in a second mode of operation; and IF demodulator circuit comprising a Nyquist filter, coupled to said tuner, for receiving said IF television signal and for filtering said IF television signal, in accordance with a Nyquist filter response, at a frequency below 20 Mhz.