DP83848Q-Q1: Internal feedback resistor value between X1 and X2

F.N

Part Number: DP83848Q-Q1

Hi team,

My customer wants to know internal feedback resistor value between X1 and X2.

Because the customer has a experience that some device crystal oscillation
had stopped at low temperatue even if the device had internal feedback resistor.
The customer added external feedback resistor to deal with it.

The customer wants to judge whether external feedback resitori is necessary
by knowing the internal feedback resistor value.

If you know its value, please let me know.

Best regards,
Fumio Nakano

over 8 years ago

0 Geet Modi over 8 years ago

TI__Mastermind 26320 points

HI Fumio-san,

I need to check with design team. I will get back to you.

Regards,
Geet

0 F.N over 8 years ago in reply to Geet Modi

TI__Expert 8760 points

Hi Geet-san,

Thank you for your reply.

I will wait for the answer.
Thank you for your cooperation.

Best regards,
Fumio Nakano

0 F.N over 8 years ago in reply to F.N

TI__Expert 8760 points

Geet-san,

How is the status on this?

Best regards,
Fumio Nakano

0 F.N over 8 years ago in reply to F.N

TI__Expert 8760 points

Hi Geet-san,

How is the status on this?

The customer thinks that DP83848Q-Q1 is OK even if in low tempareture.
The concern of the customer is the requirement of the crystal side.

If you know the internal feedback resistor value between X1 and X2 value, please let me know.

Best regards,
Fumio Nakano

0 Ross Pimentel over 8 years ago in reply to F.N

TI__Mastermind 23675 points

Hi Fumio,

Sorry for the delay on this.
Our internal feedback resistance is 353k ohms.

Best regards,
Ross

0 F.N over 8 years ago in reply to Ross Pimentel

TI__Expert 8760 points

Hi Ross-san,

Thank you!!

Best regards,
Fumio Nakano

Interface

Interface forum

DP83848Q-Q1: Internal feedback resistor value between X1 and X2