Linear Technology's LTC2992 dual-channel, rail-to-rail system monitor measures the current, voltage, and power of two supplies. This monitor features an operating range of 2.7 V to 100 V and includes a shunt regulator for supplies above 100 V. The voltage measurement range of 0 V to 100 V is independent of the input supply. Two analog to digital converter (ADCs) simultaneously measure each supply’s current. A third ADC monitors the input voltages and four auxiliary external voltages. Each supply’s current and power is added for total system consumption. Minimum and maximum values are stored and an over range alert with programmable thresholds minimizes the need for software polling. Data is reported via a standard I²C interface. Shutdown mode reduces current consumption to 25 μA, typically. The LTC2992 comes in two packages, DFN and MSOP, and three temperature ranges; 0°C to +70°C, -40°C to +85°C, -40°C to +125°C. The LTC2992 is ideal for automotive, telecom, and communication applications.