ADBMS1818ASWZ

ADBMS1818 is a multicell battery stack monitor that measures upto 18 series connected battery cells with a total measurement error (TME) of less than 3mV. The cell measurement range of 0V to 5V makes the device suitable for most battery chemistries. All 18 cells can be measured in 290µs, and lower data acquisition rates can be selected for high noise reduction. This device has an isoSPI™ interface for high speed, RF immune, long distance communications. Multiple devices are connected in a daisy chain with one host processor connection for all devices. This daisy chain can be operated bidirectionally, ensuring communication integrity, even in the event of a fault along the communication path. This device can be powered directly from the battery stack or from an isolated supply. It is widely used in application such as backup battery systems, grid energy storage, residential energy storage, UPS, high power portable equipment etc.

• Stackable architecture for high voltage systems
• Built-in isoSPI interface
• 1Mb isolated serial communications, uses a single twisted pair, upto 100 meters
• Low EMI susceptibility and emissions, bidirectional for broken wire protection
• Synchronized voltage and current measurement
• 290µs to measure all cells in a system, 16-bit Δ-Σ ADC with programmable third-order noise filter
• 9 general-purpose digital I/O or analogue inputs, temperature or other sensor inputs
• Configurable as an I²C or SPI, sleep mode supply current is 3.1µA typical
• Operating temperature is -40°C to +85°C
• Package style is 64-lead LQFP-EP

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