DS90UB927Q-Q1: On internal pull-down constant

user5877721

Part Number: DS90UB927Q-Q1
Other Parts Discussed in Thread: DS90UB928Q

For terminals with the notation "with pulldown" (eg Pin No. 13, 14 etc.), please tell me the internal pulldown constant.
Since there is a similar notation in DS90UB928Q, please also tell us.

over 6 years ago

0 Steven(Shenzhen) Shi over 6 years ago

TI__Mastermind 30515 points

Hi, do you mean the pulldown resistor value?

the internal has weak pulldown function, the resistor is ~several dozens of Kohms.

best regards,

Steven

0 user5877721 over 6 years ago in reply to Steven(Shenzhen) Shi

Prodigy 60 points

Thank you for replying.
Yes, I mean the pulldown resistor value.
Is it possible to tell me with specific numerical values?
For example, in notation like "20 kΩ to 60 kΩ".

0 Steven(Shenzhen) Shi over 6 years ago in reply to user5877721

TI__Mastermind 30515 points

Hi, it is NOT a specific resistor value, but the current with this pull-down is ~3.3uA with some variation. so actually you can get that this internal pull-down is very weak for your application.

best regards,
Steven

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DS90UB927Q-Q1: On internal pull-down constant