Hi
best regard
@ban45
Hello,
Generally both variants (1.5kΩ ± 0.1% and 1.54kΩ ± 0.5%) are acceptable.
The variant 1.5kΩ ± 0.5% also is possible, but 0.1% resistors accuracy is more preferable.
Regards,
Yuri.
Hello,
What is the difference between 1.5kΩ ± 0.1% and 1.54kΩ ± 0.5%?
I couldn't understand why 0.1% was good by looking at the data sheet.
Could you tell me?
best regard
@ban45
Hello,
"Using resistors with recommended tolerances ensures the ± 2% DDR_VREF tolerance
(per the DDR3 specification) is maintained when two DDR3 ICs plus the i.MX 6ULL are
drawing current on the resistor divider".
You may look at the following general considerations:
https://www.maximintegrated.com/en/design/technical-documents/tutorials/7/719.html
In particular: Figure 4. This simple resistor-divider analogy represents a voltage reference
unloaded (A) and loaded (B).
Regards,
Yuri.