Also interesting to see is the 20Mhz filtered Dac output current into 25R versus the unfiltered SE output signal after I/V and Diff to SE conversion, taken at the upgoing ramp of a 1Khz -12dBFs square wave recorded at 44.1Khz.
Time scale is magnified to 2usec/div, clearly showing the 81.38nsec time slots and the output of the SDM.
Although specified as a 5 level SDM, only 3 levels are visible, most likely because the dV/dT of the slope is not fast enough.
Hans
.
Time scale is magnified to 2usec/div, clearly showing the 81.38nsec time slots and the output of the SDM.
Although specified as a 5 level SDM, only 3 levels are visible, most likely because the dV/dT of the slope is not fast enough.
Hans
.
