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ADC

Attenuation

Parameters for full ESP32 chip. For others, refer to documentation.

  • ADC_ATTEN_DB_0 100mV ~ 950mV
  • ADC_ATTEN_DB_2_5 100mV ~ 1250mV - range extended by about 2.5 dB (1.33 x)
  • ADC_ATTEN_DB_6 150mV ~ 1750mV - range extended by about 6 dB (2 x)
  • ADC_ATTEN_DB_11 150mV ~ 2450mV - range extended by about 11 dB (3.55 x)