Voltage error % A(typ,max) B(typ,max) ( ☐.2,☐.5) (☐.2 ,☐.5) Voltage error over full temperature (A,B) 1%,1% DNL Resolution (ADC) 12 bit (15 bit) Quiescent current (typ,max)Ĭurrent error % A(typ,max) B(typ,max) ☒6V Analogue inputs (Common mode range) -0.3 ~ 26VĬurrent resolution (depends on R SHUNT here 0R1) Max V DD (except analogue inputs)Īnalogue inputs (max differential) The negative analogue input is used to measure the load voltageĪnd hence, with the current measurement, the power dissipated in theģV0 ~ 5V5 Abs. It is an I2C device using anĮxternal shunt sense resistor which is attached to the high side Since it can measure current and voltage it can report the power used. It also has an internal amplifier which means you don't need any other opamp power supplies for level conversion orĪmplification - just connect it up and go! Reading for negative input (wrong way round). It also does not matter which way round the current measuring inputsĪre connected as they are protected to ☒6V, however, you won't get a Voltage sources from 0~26V and it does not matter which one powers up You can connect it directly the measurement inputs with The really useful feature of this chip is that it can measure currentĪnd voltage in an external system independently from the 5~3V0 that theĬhip uses. Measure 10~15A using a different sense resistor (See the datasheet). The breakout board version below can measure ~3.2A but the chip can This chip is a current measuring chip which can also measure voltage -Īctually it can only measure voltage, but cheats by measuring voltage has a resolution of 100uA (with a 0.1R shunt resistor).MCP23017: Have you run out of I/O? This chip is the answer!

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