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DAC3482: Internal Loop Filter

Part Number: DAC3482

Hi Team,

Could you let me know about internal loop filter of DAC3482?
The DAC3482 datasheet shows Figure 56. PLL Block Diagram on page 35. But there is not description about the internal loop filter circuit.

Q1. What is the form/configuration of the internal loop filter circuit and the constant?

Q2. Does the internal filter constant change or be fixed according to the overall division ratio (P × M)?

Q3. Is there a control register / pin to switch loop filter between the internal loop filter and the external loop filter?

Q4. If the external loop filter is connected, is it cascaded to the internal loop filter?

Thank you.

Best Regards,

Koshi Ninomiya