AWR2243: Whether second LMK00804B is required for four-device cascaded array of AWR2243

Huan YANG

Prodigy 250 points

Part Number: AWR2243
Other Parts Discussed in Thread: LMK00804B

Hello Abhed Misra,

Do we really need the second LMK00804B?

Besides the 40MHz, LMK00804B is also used for Sync. But the Sync frequency is really low.

Could we use low-cost circuit such as transistor or mosfet to replace LMK00804B?

Thanks in advance.

over 2 years ago

0 Josh Wyatt over 2 years ago

TI__Guru* 91206 points

Dear Huan -

Sorry for the delay in responding and welcome to E2E. Please refer to page 3 of this application note to see the importance of using a dedicated fan out IC for the sync signal distribution.

0 Josh Wyatt over 2 years ago

TI__Guru* 91206 points

Dear Huan -

Sorry for the delay in responding and welcome to E2E. Please refer to page 3 of this application note to see the importance of using a dedicated fan out IC for the sync signal distribution.

0 Josh Wyatt over 2 years ago

TI__Guru* 91206 points

Dear Huan -

Sorry for the delay in responding and welcome to E2E. Please refer to page 3 of this application note to see the importance of using a dedicated fan out IC for the sync signal distribution.

0 Josh Wyatt over 2 years ago

TI__Guru* 91206 points

Huan -

I am not sure why you keep rejecting this answer, which is yes - Please refer to page 3 of this application note to see the importance of using a dedicated fan out IC for the sync signal distribution.

0 Josh Wyatt over 2 years ago

TI__Guru* 91206 points

Huan - I am not sure why you keep rejecting this answer, which is yes - please refer to page 3 of this application note to see the importance of using a dedicated fan out IC for the sync signal distribution.

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AWR2243: Whether second LMK00804B is required for four-device cascaded array of AWR2243