ADBMS1818
Info : RECOMMENDED FOR NEW DESIGNS
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ADBMS1818

18-Cell Battery Monitor with Daisy Chain Interface

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 9
1ku List Price Starting From $9.10
Features
  • Measures up to 18 battery cells in series
  • 3 mV maximum total measurement error
  • Stackable architecture for high voltage systems
  • Built-in isoSPI interface
    • 1 Mb isolated serial communications
    • Uses a single twisted pair, up to 100 meters
    • Low EMI susceptibility and emissions
    • Bidirectional for broken wire protection
  • 290 μs to measure all cells in a system
  • Synchronized voltage and current measurement
  • 16-bit Δ-Σ ADC with programmable third-order noise filter
  • Passive cell balancing up to 200 mA (maximum) with programmable pulse‑width modulation
  • 9 general purpose digital I/O or analog inputs
    • Temperature or other sensor inputs
    • Configurable as an I2C or SPI master
  • 6 μA sleep mode supply current
  • 64-lead LQFP_EP package
Additional Details
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The ADBMS18181 is a multicell battery stack monitor that measures up to 18 series connected battery cells with a total measurement error of less than 3.0 mV. The cell measurement range of 0 V to 5 V makes the ADBMS1818 suitable for most battery chemistries. All 18 cells can be measured in 290 μs, and lower data acquisition rates can be selected for high noise reduction.

Multiple ADBMS1818 devices can be connected in series, permitting simultaneous cell monitoring of long, high voltage battery strings. Each ADBMS1818 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.

The ADBMS1818 can be powered directly from the battery stack or from an isolated supply. The ADBMS1818 includes passive balancing for each cell, with individual PWM duty cycle control for each cell. Other features include an on-board 5 V regulator, nine general purpose I/O lines, and a sleep mode, where current consumption is reduced to 6 μA.

All registered trademarks and trademarks are the property of their respective owners.

1 Protected by multiple U.S. patents, including 8908779, 9182428, and 9270133.

APPLICATIONS

  • Backup battery systems
  • Grid energy storage
  • Residential energy storage
  • UPS
  • High power portable equipment
Part Models 9
1ku List Price Starting From $9.10

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Documentation

Documentation

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Product Lifecycle

PCN

Aug 31, 2021

- 21_0182

Addition of alternative Fab foundry and die revision for ADBMS1818

ADBMS1818ASWAZ

PRODUCTION

ADBMS1818ASWAZ-R7

PRODUCTION

ADBMS1818ASWAZ-RL

PRODUCTION

ADBMS1818ASWZ

PRODUCTION

ADBMS1818ASWZ-R7

PRODUCTION

ADBMS1818ASWZ-RL

PRODUCTION

Aug 10, 2021

- 21_0170

Addition of alternative test site for ADBMS1818

ADBMS1818ASWZ

PRODUCTION

ADBMS1818ASWZ-R7

PRODUCTION

ADBMS1818ASWZ-RL

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Aug 31, 2021

- 21_0182

arrow down

Addition of alternative Fab foundry and die revision for ADBMS1818

ADBMS1818ASWAZ

PRODUCTION

ADBMS1818ASWAZ-R7

PRODUCTION

ADBMS1818ASWAZ-RL

PRODUCTION

ADBMS1818ASWZ

PRODUCTION

ADBMS1818ASWZ-R7

PRODUCTION

ADBMS1818ASWZ-RL

PRODUCTION

Aug 10, 2021

- 21_0170

arrow down

Addition of alternative test site for ADBMS1818

ADBMS1818ASWZ

PRODUCTION

ADBMS1818ASWZ-R7

PRODUCTION

ADBMS1818ASWZ-RL

PRODUCTION

Evaluation Kit

Evaluation Kits 1

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EVAL-ADBMS1818

18-Cell Battery Stack Monitor with Daisy Chain Interface

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EVAL-ADBMS1818

18-Cell Battery Stack Monitor with Daisy Chain Interface

18-Cell Battery Stack Monitor with Daisy Chain Interface

Features and Benefits

  • Measures Up to 18 Battery Cells in Series
  • 3mV Maximum Total Measurement Error
  • Stackable Architecture for High Voltage Systems
  • Built-In isoSPI™ Interface
  • 1Mb Isolated Serial Communications
  • Uses a Single Twisted Pair, Up to 100 Meters
  • Low EMI Susceptibility and Emissions
  • Bidirectional for Broken Wire Protection
  • 290µs to Measure All Cells in a System
  • Synchronized Voltage and Current Measurement
  • 16-Bit Delta-Sigma ADC with Programmable 3rd Order Noise Filter
  • Passive Cell Balancing Up to 200mA (Max) with Programmable Pulse-Width Modulation
  • 9 General Purpose Digital I/O or Analog Inputs
    • Temperature or Other Sensor Inputs
    • Configurable as an I2C or SPI Master
  • 6µA Sleep Mode Supply Current
  • 64-Lead eLQFP Package

Product Detail

The ADBMS1818 is a multicell battery stack monitor that measures up to 18 series connected battery cells with a total measurement error of less than 3mV. The cell measurement range of 0V to 5V makes the ADBMS1818 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.

Multiple ADBMS1818 devices can be connected in series, permitting simultaneous cell monitoring of long, high voltage battery strings. Each ADBMS1818 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.

The ADBMS1818 can be powered directly from the battery stack or from an isolated supply. The ADBMS1818 includes passive balancing for each cell, with individual PWM duty cycle control for each cell. Other features include an onboard 5V regulator, nine general purpose I/O lines and a sleep mode, where current consumption is reduced to 6μA.

APPLICATIONS

  • Backup Battery Systems
  • Grid Energy Storage
  • High Power Portable Equipment

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