DS160PR410: DS160PR410 DC coupling

uv maor

Prodigy 60 points

Part Number: DS160PR410

Hi,

Does DS160PR410 supports DC coupling interface or AC coupling only?

Thanks,

over 5 years ago

0 Davor Glisic over 5 years ago

TI__Expert 8165 points

Hello-

The DS160PR410 high-speed I/Os need to be ac-coupled.

Regards,

Davor

0 uv maor over 5 years ago in reply to Davor Glisic

Prodigy 60 points

Hi,

- What is the internal DS160PR410 Rx terminations and what is the voltage it is terminated to?

- What is the internal DS160PR410 Tx terminations and what is the voltage it is terminated to?

- can I set a DC coupling between my transmitter to DS160PR410 Rx while remaining same offset DC as DS160PR410 Rx side?

- can I set a DC coupling between my reciever to DS160PR410 Tx while remaining same offset DC as DS160PR410 Tx side?

Thanks,

0 Davor Glisic over 5 years ago in reply to uv maor

TI__Expert 8165 points

Hello-

On the RX side, there are 50-ohm terminations to 2.5V bias via an active switch. DC coupling the DS160PR410 RX pins may reduce reliability of the termination resistors as these can handle very limited current.

On the TX side, there are 50-ohm terminations to 0.75V. DC coupling the DS160PR410 TX pins poses a risk to the reliability of the termination resistors as these can handle very limited current.

The DS160PR410 high-speed I/Os need to be ac-coupled. DC-coupling is not recommended.

Regards,

Davor

0 uv maor over 5 years ago in reply to Davor Glisic

Prodigy 60 points

Hi,

If I'll set 2.5v DC common mode on my Tx side - will it damage the terminations on DS160PR410 RX pins?

Thanks,

0 uv maor over 5 years ago in reply to uv maor

Prodigy 60 points

FPGA_to_UFS_Electrical.pdf

0 uv maor over 5 years ago in reply to Davor Glisic

Prodigy 60 points

2273.FPGA_to_UFS_Electrical.pdf

0 Davor Glisic over 5 years ago in reply to uv maor

TI__Expert 8165 points

Hi,

The input common mode voltage on the DS160PR410 RX is affected by an active switch. The delta between 2.5V on your TX side and the input common mode voltage on the DS160PR410 RX could still be significant enough to cause reliability issues with the input termination resistors.

The DS160PR410 high-speed I/Os need to be ac-coupled. DC-coupling is not recommended.

Regards,

Davor

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DS160PR410: DS160PR410 DC coupling