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Member Since: November 23, 2011

Country: United States

  • You are correct that the output of the voltage divider does depend on current. However, higher current draw will decrease the output of the voltage divider: 0.16 mA of current will result in 0.33 mA of current through R1 and 0.17 mA of current through R5, resulting in 3.3v drop across R1 and an output voltage of 1.7v. Most microprocessors have very high impedance inputs, so current draw will be negligible, but you should check the documentation for your part to be sure.

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