VDD ripple range

RE: VDD ripple range

Priyanka — Tue, 04 Nov 2025 09:50:11 GMT

Hi,

DEC6 is connected to DEC4 externally, and expected level is 1.26V.

For the ripple, we do not have a specified requirement, but, we observed ripple at 1MHz was very visible when other ripple frequency was not so much so. Tested Vpp is up to 30mV.

-Priyanka

RE: VDD ripple range

jermi — Thu, 30 Oct 2025 12:54:11 GMT

Hi Priyanka：

Thank you for your reply. Since our product is a modular component, we need to know the approximate voltage ranges for DEC4 and DEC6 during production. Additionally, our end customers require specifications for the ripple tolerance when the VDD supply voltage is 3.3V. We look forward to your response.

Best Regards！

jermi

RE: VDD ripple range

Priyanka — Thu, 30 Oct 2025 10:41:54 GMT

Hi Jermi,

According to the documentation, what we say is to keep the supply voltage free of any AC ripple voltage, so I would recommend you to keep it as low as possible. Also, the output voltage at DEC6 should be as close as possible to the supply.

I am checking internally to see if I can provide any numbers for these values.

-Priyanka