The LTC®6802-1 is a complete battery monitoring IC that includes a 12-bit ADC, a precision voltage reference, a high voltage input multiplexer and a serial interface. Each LTC6802-1 can measure up to 12 series connected battery cells with an input common mode voltage up to 60V. Many LTC6802-1 devices can be stacked to monitor the voltage of each cell in a long battery string. In addition, the unique level-shifting serial interface allows the serial ports of these devices to be daisy-chained without optocouplers or isolators.