For the 150k ohm pull-down resistor on the TLV7111833DDSER ENx pin(s), can you provide the tolerance of the 150k ohm internal resistor?
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
For the 150k ohm pull-down resistor on the TLV7111833DDSER ENx pin(s), can you provide the tolerance of the 150k ohm internal resistor?
Hi David,
I tried to see if I could glean this from the test data, but it is not clear. I will have to check with a designer, but if I were to guess it would probably be around 10% or maybe more.
Why is the customer concerned with this?
Regards
They are going to use the internal pull down as part of a EN control circuit.
Hi David,
I have been ensured the Design team will get an answer early next week.
HI JCHK;
Can you advise if there is an update on this from the design team?
I believe the answer is also in the datasheet on page 3. With Ven=0.9V, and the non-pull down version drawing 0.04uA, then the pull down version Enable pin current will be 6uA typical. This means the pull down resistor is: =0.9V/(0.000006-0.00000004)A or ~151k ohms. The process variation should be considered and could be as high as 20%.
Can you advise if this is the correct understanding?
Hi David,
The design team still has not gotten to this. I have been ensured it will be done by next week.
Sorry for the delay.
JCHK;
Can you check the "5128" number in the table. It seems to be way larger than the Nominal and Weak values....
Hi David,
Yes, these are the simulation results. Keep in mind this is a worst-case process corner. Again these are far lower than what is listed as a maximum value in the datasheet.
Regards,