Current Sensing on a Negative Voltage Supply Rail, Using a Precision Instrumentation Amplifier
Applications like ISDN (Integrated Services Digital Network) and telecom systems need a negative voltage, current-sense amplifier. This application note describes one method for designing a negative rail, current-sense amplifier. The design is flexible and can easily be changed for monitoring of different negative rails. The MAX4460 single-supply instrumentation amplifier is used to demonstrate the design.
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