Additional series resistors in the Wheatstone bridge string (R9 and R8) are required. These resistors adjust the

Figure 9-3. Screen Shot From Analog Engineer's Calculator

Select R8 in the same range of the bridge resistance. In this case, R8 is chosen to be 5.05 kΩ.

Resistor R9 is then calculated as follows:

(8)

Use a standard 0.1% resistor value of 1.65 kΩ.

9.2.1.3 Application Curves

The following typical characteristic curve is for the circuit in Figure 9-2.

Figure 9-4. Input Differential Voltage, Output Voltage vs Bridge Resistance

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SBOSA75A – JULY 2021 – REVISED JULY 2021

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