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Full-Bridge Amplification Using a Resistor Arrays to Provide Precise Matching in Excitation Amplifier

This example provide excitation using resistor arrays to produce precise gain. The circuit is configured to provide 10V and –5V excitation to the bridge, producing a common mode voltage at the input to the LTC2430/LTC2431 of 2.5V, maximizing the AC input range for applications where induced 60Hz could reach amplitudes up to 2VRMS