Input Stage

±IN

+IN

V+

GND

OUT

Output

V+

Input Stage

±IN

+IN

V+

GND

OUT

Output

V+

First Circuit

Second Circuit

Summed

Output

VREF

INA282, INA283, INA284, INA285, INA286

www.ti.com

SBOS485C – NOVEMBER 2009 – REVISED MAY 2015

8.2 Typical Applications

8.2.1 Current Summing

The outputs of multiple INA28x family devices are easily summed by connecting the output of one INA28x family

device to the reference input of a second INA28x family device. The circuit configuration shown in Figure 40 is an

easy way to achieve current summing.

NOTE: The voltage applied to the reference inputs must not exceed 9 V.

Figure 40. Summing the Outputs of Multiple INA28x Family Devices

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