ANALOG DEVICES LT2940CMS#PBF Power and Current Monitor, 6 to 80 V, 0 to 70 Deg C, MSOP-12

LT2940 is a power and current monitor. It measures a high side current and a differential voltage, multiplies them and outputs a current proportional to instantaneous power. Bidirectional high side currents and bipolar voltage differences are correctly handled by the four-quadrant multiplier and push-pull output stage, which allows the device to indicate forward and reverse power flow. An integrated comparator with inverting and noninverting open-collector outputs makes the device a complete power level monitor. In addition, an output current proportional to the sensed high side current allows current monitoring. The current mode outputs make scaling, filtering and time integration as simple as selecting external resistors and/or capacitors. It is used in applications such as board level power and current monitoring, line card and server power monitoring, power sense circuit breaker, power control loops, power/energy meters, battery charger metering etc.

• Four-quadrant power measurement
• Current mode power and current outputs
• ±5% power measurement accuracy
• ±3% current measurement accuracy
• Inverting and non-inverting open-collector comparator outputs
• Supply voltage operating range is 6V to 80V
• Supply current is 3.5mA typical at (IPMON = +200μA, IIMON = +200μA, TA = 25°C)
• Operating temperature is 0°C to 70°C
• Package style is 12-lead plastic MSOP