What exactly is CAPP, CAPN, VP, and VN?
Posted: Tue Aug 25, 2020 6:46 pm
I received footprints for the ESP32-PICO-D4 that had these grouped together:
The ESP32 datasheet and the ESP32-PICO-D4 datasheet do not mention anything detailed about them.
https://www.espressif.com/sites/default ... eet_en.pdf
https://www.espressif.com/sites/default ... eet_en.pdf
However, there are capacitors between VP/CAPP and VN/CAPN in the hardware design guidelines (page 12, 2.1.5)
https://www.espressif.com/sites/default ... nes_en.pdf
What are they for? Is it a tuner/filter for the ADC? Are the pins really just GPIO and ADC, or can we use them for something else?
These are two of the few results on Google that mention CAPP and CAPN:
Page 2 of https://www.onsemi.com/pub/Collateral/AX2061-D.PDF
Pages 15 and 16 of https://cdn.datasheetspdf.com/pdf-down/ ... grated.pdf
The ESP32 datasheet and the ESP32-PICO-D4 datasheet do not mention anything detailed about them.
https://www.espressif.com/sites/default ... eet_en.pdf
https://www.espressif.com/sites/default ... eet_en.pdf
However, there are capacitors between VP/CAPP and VN/CAPN in the hardware design guidelines (page 12, 2.1.5)
https://www.espressif.com/sites/default ... nes_en.pdf
What are they for? Is it a tuner/filter for the ADC? Are the pins really just GPIO and ADC, or can we use them for something else?
These are two of the few results on Google that mention CAPP and CAPN:
Page 2 of https://www.onsemi.com/pub/Collateral/AX2061-D.PDF
Pages 15 and 16 of https://cdn.datasheetspdf.com/pdf-down/ ... grated.pdf