SNOU193 May 2022 TLV3602
The following connections are made using a split supply configuration. Split supply configuration is advantageous for measurement purposes. The reference voltage can be set to GND, while the other input can be set to an AC waveform that toggles between negative and positive voltage at a 0-DC offset. Thus, the output will be toggling whenever the AC waveform crosses 0 V.
This configuration allows for 2 distinct advantages compared to a single supply input. The first advantage is that the reference voltage is at GND; a non-noisy voltage level. If the reference voltage level needs to be changed in relation to the supplies, the supply voltages can be altered instead. The second advantage being able to zoom into the input as much as possible due to the 0 DC offset of the waveform.
Below are the procedures for making a propagation delay measurement using channel A.
Figure 4-2 and Figure 4-3 are screen captures of the inputs and outputs described in the quick start procedure. Here, the propagation delay between IN+ and OUT is measured by taking the time delta between when IN+ and OUT reach 50% of their respective transitions. The low to high propagation delay in Figure 4-2 was calculated to be 2.184 ns while the high to low propagation delay in Figure 4-3 was measured to be 2.155 ns.