I'm trying to decide between a few choices for coupling the output DAC of a DDS with the rest of my circuit.
DDS dac's I'm looking at are typically either single-ended or have complimentary current out ports. The signals I'm trying to produce are symmetrical sine waves out of the DDS with a 0 DC level. Single-ended really only has one option (LC coupling for DC rejection). Double-ended DDS's have the disadvantage of using a double ended supply, which I'm trying to avoid for the digital circuitry.
Reading through some application notes, the The complimentary out DDS can either be LC coupled on one output with an additional resistive termination on the DAC side of the LC with a matching resistive termination to ground on the complimentary output or with a center tapped isolation transformer.
The application notes are sparse on what the relative advantages are of the two so I thought I would ask here. I'm trying to DC filter audio-frequency signals (100Hz->10KHz) with emphasis on maximal DC offset rejection and amplitude envelope symmetricity. Since I'm in the heavily oversampled regime and my application is fairly tolerant to HF noise I'm not really worried about filtering clock noise or other HF spurious noise from the DAC.
After some looking around I've come up with a third solution, using a simple resistive system for I-to-V conversion and an instrumentation amplifier (LT1167 potentially) for voltage sensing, would something like this work?