Direct current mode digital-to-analog converter to class d amplifier

A system, comprising:

• a class D amplifier;
• a digital-to-analog converter (DAC) directly connected to the class D amplifier;
• a common mode servo circuit coupled to a node interconnecting the DAC to the class D amplifier, wherein the common servo circuit is configured to amplify a difference between a common mode signal determined from the node and a reference voltage and generate a feedback current to the node based on the amplified difference;
• a feed-forward common-mode compensation circuit to reduce an alternating current (AC) ripple from the class D amplifier, the feed-forward common-mode compensation circuit comprising a current mirror configured to sink a current from the node to ground.

A method, comprising:

• converting a digital signal to an analog current by a digital-analog converter (DAC);
• providing the analog current directly from the DAC to a class D amplifier;
• determining a common mode voltage from a node interconnecting the DAC and the class D amplifier;
• amplifying a difference between the common mode voltage determined from the node and a common mode reference voltage to generate a feedback current;
• providing the feedback current to the node;
• generating a first current from an output node of the class D amplifier;
• and
• generating a second current through a current mirror from the node to a common potential.