ESP32 S2 External Crystal Clock Source waveform
Posted: Mon Sep 29, 2025 11:21 am
Hi,
I'm designing custom PCB for ESP32 S2 SoC. For some reasons I want to use oscillator (OCXO) instead of crystal.
What are the requirements for External Crystal Clock Source waveform? Can I use OCXO with sine output waveform?
I was looking for the requirements in Hardware Design Guidelines but I found only that:
-the oscillator output is stable and its accuracy is within ±10 ppm,
-It is recommended that the amplitude of the crystal is greater than 500 mV.
Greetings
I'm designing custom PCB for ESP32 S2 SoC. For some reasons I want to use oscillator (OCXO) instead of crystal.
What are the requirements for External Crystal Clock Source waveform? Can I use OCXO with sine output waveform?
I was looking for the requirements in Hardware Design Guidelines but I found only that:
-the oscillator output is stable and its accuracy is within ±10 ppm,
-It is recommended that the amplitude of the crystal is greater than 500 mV.
Greetings