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AD7284 Datasheet Battery Monitoring System

Manufacturer: Analog Devices

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General Description

The AD7284 contains all the functions required for the generalpurpose monitoring of stacked Li-Ion batteries, as used in hybrid electric vehicles and battery backup applications.

The AD7284 has multiplexed cell voltage and auxiliary, analogto-digital converter (ADC) measurement channels supporting four to eight cells of battery management.

The device provides a maximum total unadjusted error, TUE, (cell voltage accuracy) of ±3 mV that includes all the internal errors from input to output.

Overview

Data Sheet.

Key Features

  • 8 analog input channels, integrated secondary monitor ±3 mV maximum cell voltage accuracy, TUE, 14-bit ADC Very low measurement latency across 96 cells Stack voltage measurement ±16 mV typical battery stack voltage (TUE) accuracy Cell balancing interface, with individually programmable on time 4 auxiliary analog input channels, 14-bit ADC Suitable for thermistor inputs and external diagnostics Buffered reference output for ratiometric measurements Internal temperature sensor VDD operating range:.

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