ADC3663: About Serial LVDS interface

Atsushi Takahashi

Intellectual 655 points

Part Number: ADC3663

Hi Team,

1) Are SLVDS (Serial LVDS) and LVDS different standards?
2) Are Vpp = 700mV and Vcm = 1.0V specified by the standard?

I was not able to find detailed information about SLVDS.

Best Regards,

over 1 year ago

0 Amy over 1 year ago

TI__Expert 8901 points

Hi Atsushi,

LVDS can be implemented in serial or parallel. Here is a helpful link that describes signaling standards for your reference:

https://www.ti.com/lit/an/slla120/slla120.pdf?ts=1655237142920&ref_url=https%253A%252F%252Fwww.google.com%252F

Regards, Amy

0 Atsushi Takahashi over 1 year ago in reply to Amy

Intellectual 655 points

Hi Amy,

Thank you for your reply.

Why are the SLVDS spec values in the datasheet larger than the LVDS spec?

0 Atsushi Takahashi over 1 year ago in reply to Atsushi Takahashi

Intellectual 655 points

Hi Amy,

Please let me add something here.
Why are the SLVDS spec values in the datasheet and the LVDS spec different?

LVDS: VOD = 350mVpp, VCM = 1.2V
SLVDS: VOD = 700mVpp, VCM = 1.0V

+1 Chase W over 1 year ago in reply to Atsushi Takahashi

TI__Mastermind 18145 points

Atsushi,

LVDS is just referring to a signaling standard. LVDS really just indicates any low swing differential signal around a common mode - ie, not all references of LVDS must exactly match some set VCM and output swing guidelines. In the past this was more closely aligned in the industry. Nowadays, this isn't necessarily the case - anything goes.

0 Atsushi Takahashi over 1 year ago in reply to Chase W

Intellectual 655 points

Thank you for your answer.

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ADC3663: About Serial LVDS interface