TPD7S019: schematic review

Shai Berman

Part Number: TPD7S019

Hi team,

Could you please review the attached TPD7S019-15DBQR schematics for our VGA buffer circuits.

I added 60 ohm series res. to match 75 ohm as the int. impedance is 75 ohm, please advise if this O.K?

Thanks in advance

Shai

0 Michael Tan over 4 years ago

Hi ,

We will get the feedback to you soon,thanks!

0 Michael Tan over 4 years ago in reply to Michael Tan

Hi Berman,

If the impedance board trace is 75Ohm, it suggest you put 75Ohm for this resistor to match.

0 Shai Berman over 4 years ago in reply to Michael Tan

Michael,

The device has int. 15 ohm – so I add 60 ohm resistor - this is OK?
secondly, please.advise if other connections are O.K.?

Thanks in advance

Best regards,

Shai

0 Michael Tan over 4 years ago in reply to Shai Berman

Hi Shai,

The impedance in the Video line isn't 15Ohm, But you put 60Ohm here is no problem. The termination resistors for Video is 50-75Ohm.

The pull up resistor for DD should be 1.5K-2K. You put 2.21K is a litter big.

0 Shai Berman over 4 years ago in reply to Michael Tan

Thanks.

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