Battery Pack and Link Monitors

Data Sheet

ADBMS2960/ADBMS2961/ADBMS2962

FEATURES

Battery pack current measurement

Buffered analog inputs

Continuous operation option

Lossless measurement for coulomb counting

1 ms update rate

±0.1% maximum gain error

±1 µV maximum offset

Redundant implementation

Battery pack voltage measurement

Buffered analog inputs

Synchronous with current measurement

Differential and single-ended mode

Redundant implementation

Up to 20 voltage measurement channels

Buffered analog inputs

On-demand operation

Differential and single-ended mode

Redundant implementation

Built-in external reference

True ratiometric measurements

Overcurrent detection

Triple redundancy with majority voting

PWM output options

Built-in isoSPI™ interface

2 Mbps isolated serial communications

Capacitor or transformer coupled

Daisy-chaining option

4-wire SPI option

General-purpose digital IO

Six general-purpose outputs (GPOs)

Dual threshold read-back of GPOs

Four GPIOs configurable as an I2C or SPI controller

48-Lead side-solderable QFN package

AEC-Q100 qualified

Developed for use in ISO 26262 applications for automotive

safety integrity level capability D (ASIL D)

APPLICATIONS

Electric and hybrid electric vehicles

Backup battery systems

Grid energy storage

GENERAL DESCRIPTION

The ADBMS2960 and ADBMS2962 are battery pack monitors

and the ADBMS2961 is a link monitor for electrical and hybrid

vehicles, and other current or voltage sense applications.

The term ADBMS Pack Monitor refers to the ADBMS2960 and

ADBMS2962. The term ADBMS Link Monitor refers to the

ADBMS2961.

The ADBMS Pack Monitor measures the current flowing in

and out of a battery pack by sensing the voltage drop over a

shunt resistor with very low offset. It also detects overcurrent

conditions by fast overcurrent ADCs with digital threshold

comparators and communicates them by dedicated overcurrent

alert lines with minimum delay.

Six digital outputs (GPO) supporting open-drain or push-pull

mode can be used to control HV transistors to disconnect

external resistor dividers. Four digital general-purpose

inputs/outputs (GPIO) can also operate as an I2C/SPI controller

interface to address external serial peripherals (such as

EEPROM).

A total of 12 dedicated buffered high-impedance inputs (V1 to

V10, VBAT1, and VBAT2) are provided for measuring voltages

from external sensors or resistor dividers enabling

measurement of pack voltages, temperatures, HV-Link

voltages, chassis isolation, and supervision of the state of

contactors and fuses. An additional eight buffered high-

impedance inputs (V11 to V18) are available in certain

configurations for a total of 20 inputs. The built-in serial

interface of the ADBMS Pack Monitor can be configured for

SPI or isolated isoSPI communication with the BMS controller.

It has an additional isoSPI port, which allows connecting a

daisy-chain of ADBMS Pack Monitor devices, optionally

extended withADBMS6834/6836/6837 cell monitors (ADBMS

cell monitors).

Table 1. ADBMS296x Derivative Overview

FEATURE

ADBMS2960

ADBMS2961

ADBMS2962

isoSPI Ports

2

2

−

SPI

1

1

1

Current Channels

2

−

2

Overcurrent Channels

3

−

3

Pack Voltage Channels

2

2

2

HV Voltage Channels

10 to 18

10 to 18

10 to 18

GPOs

6

6

6

GPIOs

4

4

4

Rev. SpB

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or

other rights of third parties that mayresult from its use. Specifications subjectto change without

notice. No license is granted by implication or otherwise under any patent or patent rights of

Analog Devices. Trademarks and registered trademarks are the property of their respective

owners.

One

Analog

Way,

Wilmington,

MA

01887-2356,

U.S.A.

Tel: 781.935.5565

©2025 Analog Devices, Inc. All rights reserved.

Technical Support

www.analog.com