SN65LVDT100: How to extend the transmission distance as long as possible.

Kazuya Nakai59

Guru 20580 points

Part Number: SN65LVDT100
Other Parts Discussed in Thread: DS25BR110, DS25BR120, LMH0001, LMH0024

Hello guys,

They are considering using SN65LVDT100 for their new products.

At this moment, they have the following questions.
Could you please give me your reply?

Q1.
They want to know how to extend this device transmission distance as long as possible.
Could you please give me any your comment, any information or document about this?

Q2 .
Which parameter in SN65LVDT100 datasheet is affected to this device transmission distance mainly.

Q3. If you have any similar device which can achieve longer distance communication than SN65LVDT100, could you please tell me?

Your reply would be much appreciated.

Best regards,
Kazuya.

6 months ago

0 Clemens Ladisch 6 months ago

Guru 265760 points

You can get longer distances with RS-485. What speed do you require?

0 Kazuya Nakai59 6 months ago in reply to Clemens Ladisch

Guru 20580 points

Hello Clemens,

Thank you very much for your reply.

They want to transmit LVDS signal with 80MHz and 5 meter distance at least.
Do you know any TI device which can suit it?

Thank you again and best regards,
Kazuya.

0 Clemens Ladisch 6 months ago in reply to Kazuya Nakai59

Guru 265760 points

As shown above, any standard LVDS transmitter will be able to handle at least 10 m. LVDS buffers with pre-emphasis/equalization like the DS25BR120/DS25BR110 can handle some tens of m.

What distances do you actually require?

Larger distances (up to about 350 m) can be handled with SDI cable drivers/equalizers like the LMH0001/LMH0024, but they require a minimum rate of 125 Mbps.

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SN65LVDT100: How to extend the transmission distance as long as possible.