Can I use the LT5400 as a resistor?
I would like to connect series the resistor for example LT5400-1 to receive 10k - 20k - 30k - 40k in series?
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1
Yes
It is only four resistors in a package, so you can can do anything you'd normally do with four resistors, including connect them in series to get a higher resistance.
It's not often done, because it's rarely cost-effective. An LT5400 is about £10, and a single precision resistor is nearer to £2. The reason the LT5400 is more expensive is that the four resistors it contains are very carefully matched, both in resistance and in temperature coefficient. But if you just connect them in series, then that's a bit wasted.
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\$\begingroup\$ @Lobi: That part is simply four independent resistors in a single package. You can do anything with them that you can do with four separate resistors. \$\endgroup\$ Commented May 28, 2017 at 15:32