ONET1101L: Laser CW mode of operation settings

Nanjunda M1

Part Number: ONET1101L

Tool/software:

Hi,

We have a laser which we want to drive with ONET1101L in Continuous wave (CW) mode. How do I make the modulation 0? Is it right to connect them to the ground? IS there any other setting to do that?

Can anyone please suggest.

Thanks & Regards,

Nanjunda M

over 2 years ago

0 Nasser Mohammadi over 2 years ago

TI__Guru* 93570 points

Hi Nanjunda,

There is a residual 10mA of modulation current and thus we cannot operate with 0 modulation.

Regards, Nasser

0 Nanjunda M1 over 2 years ago in reply to Nasser Mohammadi

Prodigy 225 points

Is there any other part which can work with CW mode operation?

Thanks & Regards,

Nanjunda M

0 Nasser Mohammadi over 2 years ago in reply to Nanjunda M1

TI__Guru* 93570 points

Hi Nanjunda,

The only the other part that i can think of is ONET1151L; however this part has 5mA of minimum modulation current.

Regards, Nasser

0 Nanjunda M1 over 2 years ago in reply to Nasser Mohammadi

Prodigy 225 points

Hi Nasser,

I'm looking for 0mA modulation current. Modulation will create issue where you need pure CW.

Please let me know if there is any pure CW driver.

Regards,

Nanjunda M

0 Ryan Kitto over 2 years ago in reply to Nanjunda M1

TI__Guru 61395 points

Hello,

Due to a US Holiday, the response to your question may be delayed. We will look into your question when we return tomorrow, July 5th. Sorry for the wait and any inconvenience it may cause.

Thanks,

Ryan

0 Nasser Mohammadi over 2 years ago in reply to Ryan Kitto

TI__Guru* 93570 points

Hi Nanjunda,

Unfortunately our parts cannot meet this requirement.

Regards, Nasser

0 Nanjunda M1 over 2 years ago in reply to Nasser Mohammadi

Prodigy 225 points

Thanks for letting me know.

Regards,

Nanjunda M

0 Nanjunda M1 over 2 years ago in reply to Nasser Mohammadi

Prodigy 225 points

How about the part : ONET1141LRGET ?

The datasheet says that the modulation can be disabled?

Can you please explain?

Regards,

Nanjunda M

0 Nasser Mohammadi over 2 years ago in reply to Nanjunda M1

TI__Guru* 93570 points

Hi Nanjundra,

There is 100uA bias current when driver is disabled. Would this be ok for your application?

Regards, Nasser

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ONET1101L: Laser CW mode of operation settings