LMH0303: Set SDO as the 100 ohms differential twisted pair

CC C

Part Number: LMH0303
Other Parts Discussed in Thread: DS30BA101, DS30EA101,

Dear staff,

I have a question related to the SDO video output.

Question 1

How I can set the SDO as the 100ohms differential twisted pair to pass through a highspeed connector, then convert back to the 75 ohms?

over 2 years ago

0 Nasser Mohammadi over 2 years ago

TI__Guru* 93670 points

Greetings,

Please take a look at DS30BA101 and DS30EA101. These parts cab be used to drive 100-Ohm or 75-ohm coax. Here are links to these two parts:

https://www.ti.com/lit/ds/symlink/ds30ba101.pdf?ts=1652230658217&ref_url=https%253A%252F%252Fwww.ti.com%252Fsitesearch%252Fen-us%252Fdocs%252Funiversalsearch.tsp%253FlangPref%253Den-US%2526searchTerm%253Dds30ba101%2526nr%253D60

Please note figure 2 & 3 of the DS30BA101 data sheet.

Regards,Nasser

0 CC C over 2 years ago in reply to Nasser Mohammadi

Prodigy 100 points

Dear support,

Thanks for your solution.

1. May I confirm with you that the SDO from LMH0303 is able to support 100ohms differential twisted pair?

2. Both DS30BA101 and DS30EA101 must be applied together?

Thank you.

0 Nasser Mohammadi over 2 years ago in reply to CC C

TI__Guru* 93670 points

Greetings,

1). Yes can use LMH0303 to drive 100-ohm differential. You need to change 75-ohm Resistors to 50 ohm. Please take a close look at DS30BA101 and you can use the same component values for 100-ohm media.

2). You can use them separately as well.

Regards,Nasser

Interface

Interface forum

LMH0303: Set SDO as the 100 ohms differential twisted pair