SBOU255 January   2021 INA183

 

  1. 1Trademarks
  2. 2Introduction and Overview
    1. 2.1 INA183
    2. 2.2 INA183EVM
    3. 2.3 Hardware Included
  3. 3Quick Start Setup and Use
    1. 3.1 Measurement With Shunt
    2. 3.2 Measurement Without Shunt
  4. 4INA183EVM Circuit
    1. 4.1 Rx03
    2. 4.2 Rx01, Rx02, Cx01, Cx02, Cx03
    3. 4.3 U1, U2 and U3
    4. 4.4 Voltage Inputs
  5. 5INA183EVM Schematic and PCB Layout
    1. 5.1 Schematic
    2. 5.2 PCB
  6. 6Bill of Materials

4.4 Voltage Inputs

The test points on VinP and VinN terminals are intended to be used if the designer is configuring the EVM for measurement without an onboard shunt resistor (see Figure 3-2). These inputs accept a differential voltage that is amplified by the selected device gain and is presented at the device output, or OUT terminal. These inputs could also be used to connect the differential voltage developed across an external shunt in an existing circuit. The acceptable differential input voltage range are determined by the supply voltage and gain of the selected device.

The user can configure the EVM for measurement with a shunt resistor (see Figure 3-1). This requires soldering a surface mount shunt resistor to the EVM. As in the setup for the measurement without a shunt resistor, the input voltage range is determined by the supply voltage and the gain of the selected device.