Abstract: This application note uses a high-side current-sense amplifier to monitor the current from a negative supply voltage. The circuit uses the IC's wide common-mode input range to amplify a small Vsense signal at the negative supply and level shift it up to a positive output voltage.Maxim > App Notes > AMPLIFIER AND COMPARATOR CIRCUITS BATTERY MANAGEMENT CIRCUIT PROTECTION MEASUREMENT CIRCUITS Keywords: current sensor, negative supply, current sense amplifier, negative current monitor, current sense May 11, 2003 amp, current monitor APPLICATION NOTE 2011 High-Side Positive Current Sensor Monitors Negative Supply Abstract: This application note uses a high-side current-sense amplifier to monitor the current from a negative supply voltage. The circuit uses the IC's wide common-mode input range to amplify a small Vsense signal at the negative supply and level shift it up to a positive output voltage. All dedicated current-sense amplifiers are designed for high-side sensing on a positive supply, but you can adapt them to monitor a negative supply (Figur……