Digital-to-analog converter with integrated comb filter

A method for converting an input digital signal to an analog output signal, the method comprising:

• processing, by digital signal processing circuitry of a digital to analog converter circuit (DAC), the input digital signal according to a first transfer function to generate a first processed digital signal;
• processing, by the digital signal processing circuitry, the input digital signal according to a second transfer function to generate a second processed digital signal;
• converting, by a first unit DAC, the first processed digital signal to a first intermediate analog signal;
• converting, by a second unit DAC, the second processed digital signal to a second intermediate analog signal;
• connecting, by a first switching circuit, the first intermediate analog signal to a first input of a combiner circuit when a clock signal is in a first state;
• disconnecting, by the first switching circuit, the first intermediate analog signal from the first input of the combiner circuit when the clock signal is in a second state;
• connecting, by a second switching circuit, the second intermediate analog signal to a second input of the combiner circuit when the clock signal is in the second state;
• and
• disconnecting, by the second switching circuit, the second intermediate analog signal from the second input of the combiner circuit when the clock signal is in the first state, wherein an output of the combiner circuit is the analog output signal.