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Dear TI Team
What is the impedance value between pin A and pin B (between pin No. 6 and pin No. 7) of SN65HVD3088EDRG4?
(The reference value is fine, so I'd be happy if you could tell me.)
Best Regards,
Y.Ottey
The equivalent schematic can be found in Figure 21 in the datasheet. The impedance between A and B is about 400kOhm (2x of a single node).
hi Hao
Thank you for your reply.
I checked Figure.21 you mentioned.
Does the meaning of 400kΩ you mentioned mean the sum of the 180kΩ resistors (red circles in the figure below) listed in A input and B input (360kΩ)?
(If so, it's not enough for 40kΩ, so please tell me the details.)
Best Regards,
Y.Ottey
Ottey-san,
You're correct. On top of two 180kOhm, two parallel 36kOhm will contribute too. In total, it's 180+180+2*(36/2)~=400.
Hi Hao
Thank you for your reply.
I understand or your reply.
I could understand the reason for 400kΩ.
Regards,
Y.Ottey
Hi Hao, other TI Team member
If you know the deviation of impedance 400kΩ between A and B mentioned, please let me know.
(Of course, I think that there is a deviation in the 180kΩ and 36kΩ resistors shown in Figure.21, so I would like to know how much the deviation will be.)
Regards,
Y.Ottey
Ottey-san,
The silicon resistance could have large variation like +/-20%.
Hi Hao
Thank you for your reply.
In other words, is it correct to recognize that the internal 180kΩ or 36kΩ resistance has a deviation of up to ± 20% and the impedance also has a deviation of the same amount?
Best Redgards,
Y.Ottey