8.3.1 Sampling Aperture Matching

The ADS1278-SP converter operates from the same CLK input. The CLK input controls the timing of the modulator sampling instant. The converter is designed such that the sampling skew, or modulator sampling aperture match between channels, is controlled. Furthermore, the digital filters are synchronized to start the convolution phase at the same modulator clock cycle. This design results in excellent phase match among the ADS1278-SP channels.

Figure 37 shows the inter-device channel sample matching for the ADS1278-SP.