SENSOR_CAPP and SENSOR_CAPN

chris1seto
Posts: 20
Joined: Tue Jun 12, 2018 5:05 pm

SENSOR_CAPP and SENSOR_CAPN

Postby chris1seto » Tue Jun 26, 2018 5:18 pm

I'm working on a design using the ESP32 5x5 QFN package.

This design happens to be extremely small, so every single component which can be shaved off is of a significant benefit.

I wish the datasheet gave some more details on SENSOR_CAPP and SENSOR_CAPN. Are the 270pF caps on these pins only necessary if the capacitive sensor is used on the chip? I will be using the ADC, but only to measure an external pin.

Additionally, does anyone know about the RC circuit on CAP1/CAP2? I will not be using deep sleep, so are any of these components required? This is another item the datasheet does a poor job of explaining.

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