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Demonstration circuit 2839A is a high voltage, high side current sense circuit featuring the LTC6115. This circuit measures inputs up to 100V and 2A. The board can be connected to Linduino^® as a shield and has an accompanying Linduino sketch. The gain of the current sense channel may be set with jumpers to 5V/A (100V/V) or 2.5V/A (50V/V), and the gain of the voltage sense channel may be selected with jumpers for unity gain or 2V/V.

The DC2839A includes a 4-terminal 50mΩ sense resistor with a footprint for larger, higher-power rated parts. A 1:1000 resistor divider can be selected with jumpers to provide simulated mV-scale input difference voltages if high currents are not available.

The voltage sense and current sense can be configured to measure the same input or separate inputs.