LMH1297: LMH1297 INVERT IN0 polarity

PHILIP HSU

Expert 1900 points

Part Number: LMH1297

Hi,.

is it possible do LMH1297 INVERT IN0 polarity ?

thanks

over 6 years ago

0 Nasser Mohammadi over 6 years ago

TI__Guru* 93570 points

Hi Philip.

On LMH1297 device, you can invert any of the outputs polarity. This inversion is done on the outputs.

Regards,, Nasser

0 Chu Stanley over 6 years ago in reply to Nasser Mohammadi

Prodigy 60 points

Hi Nasser,.

Host was SFP Golden Finger (pinout as attachement )，

when the wiring into pcba，it`s +/- swap issue 。

(PCB layout left IC，right is Golden Finger)

please help to suggest it

LMH1297 Pin NO.	Datasheet Name	Application Requirement
19	IN0 +	Differential -
18	IN0 -	Differential +

Embrionix_Pinout_Table.pdf

0 Nasser Mohammadi over 6 years ago in reply to Chu Stanley

TI__Guru* 93570 points

Hi Stanley,

Please note LMH1297 programming guide section 3.14. Through register settings, you can invert output polarity on any of the outputs. Please connect input IN0 to accommodate your pcb layout then you can invert output polarity as you wish.

Regards,, Nasser

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LMH1297: LMH1297 INVERT IN0 polarity