The LMP92064SDE/NOPB is a precision low-side digital Current Sensor and Voltage Monitor with a digital SPI interface. This analog frontend (AFE) includes a precision current sense amplifier to measure a load current across a shunt resistor and a buffered voltage channel to measure the voltage supply of the load. The current and voltage channels are sampled simultaneously by independent 125kSps, 12-bit ADC converters, allowing for very accurate power calculations in unidirectional sensing applications. The LMP92064 includes an internal 2.048V reference for the ADCs, eliminating the need of an external reference and reducing component count and board space. A host can communicate with the LMP92064 using a four-wire SPI interface running at speeds of up to 20MHz. The fast SPI interface lets the user take advantage of the higher bandwidth ADC to capture fast varying signals.
