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ADS1115量測電壓範圍

Chang Scott
Prodigy 160 points
Other Parts Discussed in Thread: ADS1115

ADS1115的PGA設定，最大量測電壓

寫設定000可測±6.144V，可是NOTE寫需高過VDD+0.3

那輸入電壓又是2.0~5.5V，5.5+0.3也不過才5.8V

最大也不過可量測到5.8V，請問那6.144怎麼來？？

 

(1) This parameter expresses the full-scale range of the ADC scaling. In no event should more than VDD + 0.3V be applied to this device.