Abstract: The following application note shows a circuit that converts the load current of a positive power supply into a ground referenced signal voltage using the ICL7612 operational amplifier. Maxim > App Notes > AMPLIFIER AND COMPARATOR CIRCUITS Keywords: positive supply current, monitoring, load current, power supply, opamp, operational amplifiers, op Jul 09, 1998 amps APPLICATION NOTE 69 Micropower Circuit Monitors Positive Supply Current Abstract: The following application note shows a circuit that converts the load current of a positive power supply into a ground referenced signal voltage using the ICL7612 operational amplifier. The inexpensive circuit of Figure 1 converts the load current of a positive power supply to a ground-referenced signal voltage, without recourse to the instrumentation amplifier, extra power supply, and matched sets of resistors typical of such circuits. The output current IO (proportional to supply current) flows through RO to produce VO. Be……