ONET4211LD: Laser/Photo diodes connection change needs a solution

Shlomi Yehezkia

Mastermind 6150 points

Part Number: ONET4211LD
Other Parts Discussed in Thread: ONET1130EC

Hi Team,

Attached my request.

Thanks,

Shlomi

Laser30mW_in_schematics.pdf

ONET42xxLD.docx

over 4 years ago

0 Nasser Mohammadi over 4 years ago

TI__Guru* 88905 points

Hi Shlomi,

I believe N-Type should be fine.

I have also attached a note describing ONET4211LD output driver configurations.

Regards,, Nasser1411.ONET4201LD-4211LD Output Drive.pdf

0 Shlomi Yehezkia over 4 years ago in reply to Nasser Mohammadi

Mastermind 6150 points

Hi Nasser,

To clarify, I currently have an N-type connection which I need to replace to a P-type (or maybe an M-type) connection (take another look at the pictures attached in previous), mainly due to thermal reasons; and I also have a suggestion from Maxim for the MAX3740.

I need a driver for a P-type (or M-type) connection, where the laser has to be CW.

Thanks,

Shlomi

0 Nasser Mohammadi over 4 years ago in reply to Shlomi Yehezkia

TI__Guru* 88905 points

Hi Shlomi,

I checked and unfortunately we have mainly validated N-type laser.

There is another device - ONET1130EC - which can operate in P-type. Please note a link to the data sheet below(note figure 70). However, this is a 10G part.

http://www.ti.com/lit/ds/symlink/onet1130ec.pdf

Regards,, Nasser

Interface

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ONET4211LD: Laser/Photo diodes connection change needs a solution