Patent ID: 7773968

Claim:
A receiver, comprising: a mixing digital-to-analog converter (DAC), comprising: an RF transconductance section having an input for receiving a radio frequency (RF) signal and an output configured to provide an RF current signal; and a switching section coupled to the RF transconductance section, the switching section having inputs for receiving bits of a digital local oscillator (LO) signal and having an output configured to provide an analog output signal, the switching section mixing the RF current signal with a plurality of aligned bits of the digital LO signal to produce the analog output signal; a direct digital frequency synthesizer (DDFS) having outputs configured to provide the bits associated with the digital LO signal to the inputs of the switching section; and an interface coupled between the DDFS and the mixing DAC, wherein the interface is configured to align the bits of the digital LO signal provided by the DDFS with a first clock signal to produce the plurality of aligned bits.