Performance with input series resistors

AN4369

4/14

DocID025335 Rev 1

2

Performance with input series resistors

In some applications, the gain of the current sensing has to be different from the one

available with our IC (20 V/V, 25 V/V, 50 V/V, or 100 V/V). This gain can be fine-tuned by

adding external serial resistances Rs1 and Rs2 (see Figure 2). Note that adding external

components modifies the R3/R1 ratio and introduces gain error.

Figure 2: Principle schematic