DS90UB953-Q1: DS90UB953-Q1

Itay Barabi

Part Number: DS90UB953-Q1

Further to the previous question, e2e.ti.com/.../4654773

We checked the schematics of the manufacturer of the camera modules and found that the capacitors of RIN+=100uF and RIN- =47uF

Can this cause errors in register 0X52=0X47, 0X55 0X56?

over 2 years ago

0 Hamzeh Jaradat over 2 years ago

TI__Guru** 107810 points

Hello Itay,

Are the RIN traces routed as differential from the SER to connector, or as single ended?

0 Itay Barabi over 2 years ago in reply to Hamzeh Jaradat

Prodigy 120 points

It routed as single ended, we working with coax cable.

0 Hamzeh Jaradat over 2 years ago in reply to Itay Barabi

TI__Guru** 107810 points

For single ended these capacitors must be difference.

Itay Barabi said:
capacitors of RIN+=100uF and RIN- =47uF

do you really mean 100uF and 47uF or 100nF and 47nF?

0 Itay Barabi over 2 years ago in reply to Hamzeh Jaradat

Prodigy 120 points

You are right

Its my mistake

It 100nF and 47nF

0 Casey McCrea over 2 years ago in reply to Itay Barabi

TI__Guru** 103215 points

Itay,

For single ended applications this is the correct termination for RIN+ and RIN- in order to balance the differential driver/receiver. You can find example diagrams in the datasheet for DS90UB953-Q1

Best Regards,

Casey

0 Itay Barabi over 2 years ago in reply to Casey McCrea

Prodigy 120 points

But if the capacitors on the serializer are different?

On the serializer we use 33nF on the DOUT+ and 15nF on DOUT- pin, and the capacitors on the deserializer side are 100nF on RIN+ and 47nF for RIN-.

Do they need to replace the capacitors of the deserializer?

Thanks

0 Hamzeh Jaradat over 2 years ago in reply to Itay Barabi

TI__Guru** 107810 points

Hello Itay,

this should be fine. You can use any value between 33nF to 100nF on the Dout+, and any value between 15nF and 50nF on the Dout-.

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DS90UB953-Q1: DS90UB953-Q1