LS1046ARDB Eval Board 1V Supply - What is the purpose of the sense line resistors?

[matthej]

Hi,

I am looking at the LS1046ARDB eval board which utilizes the LTC7150 1V/0.9V supply. I was confused as to how the VDD sense lines were connected. I have attached the design of this.

What is the purpose of the 0 ohm resistors (R894, R896, and R62)?

Thanks!

[ufedor · Accepted solution]

The zero ohm resistors R894, R896 are added so that the sense path can be isolated if needed. Also if a different resistor value is needed to avoid noise then this resistor pairs were suggested by Linear Technology (analog team).

R62 was also recommended by Linear Technology team to be added.

[ufedor]

Which exactly schematics is in question?

Please provide complete PDF for inspection.

[matthej]

Sorry its actually the LS1046 FRWY board.

See p.7 of attached schematics.

Thanks!