Current sensing configuration

UM1955

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DocID028405 Rev 1

2

Current sensing configuration

The current sensing configuration allows monitoring of the current that is consumed by an

application. On this expansion board, the operational amplifier is set to a high-side current

sensing structure. This means that the current is measured close to the supply voltage, thus

before the application. Figure 3 illustrates this concept.

Figure 3. High-side current sensing application principle

2.1

Schematic diagram

Figure 4, shows the circuit schematic of the current sensing configuration.

Figure 4. Current sensing configuration circuit schematic