Hi,
from datasheet, here is a figure to show "large-signal step response" as below:
so :
①it seems like the output delay is around 20ns, what the reason for amps' this delay? do we have any document for that?
②is there any spec from datasheet can show how much this delay?
thank you!
B&R
Yuan
Yuan,
No electronic device can respond to the input signal infinitely fast. Just as there is a propagation delay in logic gates, there is response delay time in analog devices - a time lag between an electronic input and the output signal, which depends on the value of passive components used (e.g. parasitic capacitance).
For this reason, there are three components to the output signal settling time:
The typical value of large-signal step delay time of 20ns is given in the graph in Fig 32 but there is more to the story.
Please be aware that any small-signal phase shift, PS [degrees), between sinusoidal input and output also effectively results in time delay: t = (PS/360)*Period – see example below.
