Differential Low-Pass Filter Sampling for Higher Signal-to-Noise Ratio

The patent divides the single-ended input architecture into two separate single-ended input paths, each processing one side of the differential signal independently. This segmentation allows the circuit to handle differential signals while maintaining the simplicity of single-ended input structures, ultimately improving signal-to-noise ratio through differential processing without requiring a completely different architectural approach.

The patent designs the circuit to perform multiple functions within a single architecture: it can process both single-ended and differential signals, provide low-pass filtering, and maintain signal integrity without requiring separate conversion stages. The unified circuit structure handles signal conditioning and filtering simultaneously, eliminating the need for additional conversion components.

Instead of converting a differential signal to single-ended and then processing it, the patent inverts the conventional approach by maintaining differential signal paths throughout the processing chain. Each side of the differential signal is processed independently through its own single-ended input path, and the differential nature is preserved until the final stage, improving signal-to-noise ratio while avoiding premature conversion complexity.