The LTC6820IMS#PBF is an isolated single-cell high performance coulomb counter analog front end from Analog Devices. It features a specialized isoSPI Iso Communications Interface (iC3) which provides an isolated serial data bus between the microcontroller and the LTC6820 allowing up to 10 cells to be connected in a daisy-chain configuration. This also allows power isolation with up to 500 Vrms of continuous working isolation. The LTC6820IMS#PBF also features high precision sense amplifier with a 16-bit resolution to capture the minute voltage differences across a sense resistor. It also supports a wide supply voltage range, up to 16V, and can withstand up to 100V surges. Additionally, this part also features input protection circuitry as well as short circuit protection on the sense resistor.