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AD7280A Datasheet Lithium Ion Battery Monitoring System

Manufacturer: Analog Devices

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General Description

The AD7280A1 contains all the functions required for generalpurpose monitoring of stacked lithium ion batteries as used in hybrid electric vehicles, battery backup applications, and power tools.

The part has multiplexed cell voltage and auxiliary ADC measurement channels for up to six cells of battery management.

An internal ±3 ppm/°C reference is provided that allows a cell voltage accuracy of ±1.6 mV.

Overview

Lithium Ion Battery Monitoring System AD7280A.

Key Features

  • 12-bit ADC, 1 μs per channel conversion time 6 analog input channels, common-mode range 0.5 V to 27.5 V 6 auxiliary ADC inputs ±1.6 mV cell voltage accuracy On-chip voltage regulator Cell balancing interface Daisy-chain interface Internal reference: ±3 ppm/oC 1.8 μA power-down current High input impedance Serial interface with alert function 1 SPI interface for up to 48 channels CRC protection on read and write commands On-chip registers for channel sequencing VDD operating range: 8 V to 30 V Te.

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