ATS860: External Clock Upgrade
While the ATS860 features a low jitter, high reliability 250 MHz oscillator as the timebase source, there are occasions when ATS860 has to be synchronized to an external clock source. ATS860 External Clock option provides an SMA input for an external clock signal, which can be a sine wave or LVTTL signal.
In order to operate the ADC under optimal conditions, the user must set the appropriate frequency range for the external clock being supplied. The following ranges are supported:
Fast External Clock: 20 MHz < fEXT < 250 MHz
Slow External Clock: fEXT < 40 MHz
The active edge of the external clock is software selectable between the rising or falling edge.