Hi,
I am trying to understand the use of the TX_TRIG input on the ADS52J90 ADC.
The datasheet states that:
"The device has multiple PLLs and clock dividers that are used to generate the programmable ADC resolutions
and LVDS synchronization factors as well as to synchronize LVDS test patterns.
The TX_TRIG input is used to synchronize clock dividers inside the device. The synchronization achieved using
TX_TRIG also enables multiple parallel devices to operate synchronously."
And also that:
"Applying a pulse on TX_TRIG is a mandatory part of the power-up and initialization sequence.
In case a TX_TRIG is not applied, the device can possibly behave in an unexpected manner."
I want to use multiple ADCs to synchronously a certain number of samples on 32 channels, say 4x ADS52J90 ADCs which are simultaneously triggered to capture 100 synchronous samples each and then wait for the next trigger before capturing the next 100 samples. Is this operation possible using the TX_TRIG input? I find the datasheet a little unclear on this subject, it looks like TX_TRIG is used when the device is powered on in order to synchronise devices, but is it possible to capture a specific number of samples each time the devices is triggered or does the ADC just continuously capture once TX_TRIG has gone high?
Thanks
Henry
