A Current-Feedback Instrumentation Amplifier with 5μV Offset for Bidirectional High-Side Current-Sensing

In this paper, a current-feedback instrumentation amplifier for bidirectional high-side current-sensing is proposed. The current sense amplifier was fabricated in a 0.8mum BICMOS process with high-voltage transistors and laser-trimmed thin-film resistors. It is concluded that these amplifiers offer a new level of precision in current sensing.

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