Dear,
I am planning to use an OCXO (Taitien NI-10M-2503) as the external oscillator (HSE) for synchronizing the MCU to a highly accurate clock source. The OCXO provides an RF output with a sine wave swinging between -2V and 2V.
According to the STM32H533 datasheet, it appears that the input signal on the OSC_IN pin must not exceed Vdd or fall below Vss. In my case, Vdd is 3.3V, and Vss is ground.
I would like to seek your guidance regarding the following:
- Based on the datasheet, my understanding is that directly connecting the OCXO output to the OSC_IN pin would not work. Could you confirm if this is correct?
- Would it be necessary to use a circuit such as a bias-T to condition the signal before feeding it into the OSC_IN pin?
- Are there any example circuits or application notes available for this type of setup?
- If there are alternative or better approaches, I would greatly appreciate your recommendations.
Thank you very much for your time and assistance. I look forward to your advice.
Best regards,
