ADS54J69EVM: Synching a pair of ADS54J69 A/Ds

user6406767

Part Number: ADS54J69EVM
Other Parts Discussed in Thread: ADS54J69

I have a pair of ADS54J69 A/Ds operating in parallel. They each receive the same Device Clock Frequency but I need their internal sampling rates (one-half of the Device Clock Frequency) to be in phase. How can the devices by synchronized?

over 3 years ago

0 jim s over 3 years ago

TI__Guru* 91947 points

3823.Multi-Device Synchronization of JESD204B Data Converters.pptxUser,

Both devices should receive a device clock and SYSREF. The SYSREF is used to reset all internal clocks and will synchronize the two devices.

Make sure to operate the devices in subclass 1 and the trace lengths of all four of these signals must be the same. See attached for more info.

Regards,

Jim

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ADS54J69EVM: Synching a pair of ADS54J69 A/Ds