AD7280ABSTZ
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Analog Devices Inc. AD7280ABSTZ

Manufacturer No:
AD7280ABSTZ
Manufacturer:
Analog Devices Inc.
Package:
Tray
Description:
IC BATT MON LI-ION 1-6CEL 48LQFP
Delivery:
Payment:
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Product Introduction

Overview

The AD7280ABSTZ, manufactured by Analog Devices Inc., is a sophisticated lithium-ion battery monitoring system. This integrated circuit is designed to manage and monitor lithium-ion batteries, particularly in applications requiring precise cell voltage measurement and balancing. The AD7280ABSTZ is part of the AD7280A family and is housed in a 48-pin LQFP package, making it suitable for a variety of industrial and consumer electronics applications.

Key Specifications

ParameterMinTypMaxUnitTest Conditions/Comments
VDD Supply Voltage8-30VVSS = 0 V, TA = −40°C to +105°C
ADC Resolution---12 BitsNo missing codes
Integral Nonlinearity--±1 LSB--
Differential Nonlinearity--±0.8 LSB--
Offset Error--±1 LSB--
Gain Error--±1 LSB--
Cell Voltage Accuracy--±1.6 mV--
Conversion Time per Channel-1 μs---
Number of Analog Input Channels-6---
Number of Auxiliary ADC Input Channels-6---
Package Type---LQFP-48-
Pin Count---48-
Operating Temperature Range-40°C-105°C--

Key Features

  • 12-bit ADC with 1 μs per channel conversion time: Provides high-speed and accurate cell voltage measurements.
  • Multiplexed Cell Voltage and Auxiliary ADC Measurement Channels: Supports up to six cells of battery management and includes six auxiliary ADC input channels for temperature measurement or system diagnostics.
  • Internal ±3 ppm/°C Reference: Ensures high cell voltage accuracy of ±1.6 mV.
  • Dynamic Alert Function: Detects whether cell voltages or auxiliary ADC inputs exceed user-defined upper or lower limits.
  • Cell Balancing Interface Outputs: Controls external FET transistors to allow discharging of individual cells.
  • Built-in Self-Test Feature: Internally applies a known voltage to the ADC inputs for self-testing.
  • Daisy-Chain Interface: Allows up to eight parts to be stacked without individual device isolation.
  • Single VDD Supply: Operates from a single supply voltage ranging from 8 V to 30 V.

Applications

  • Education and Research
  • Internet of Things (IoT)
  • Computing and Data Storage
  • Aerospace and Defense
  • Healthcare
  • Energy and Power Systems
  • Renewable Energy
  • Telecommunications
  • Automotive

Q & A

  1. What is the primary function of the AD7280ABSTZ?
    The AD7280ABSTZ is a lithium-ion battery monitoring system designed to manage and monitor lithium-ion batteries.
  2. What is the ADC resolution of the AD7280ABSTZ?
    The ADC resolution is 12 bits.
  3. How many analog input channels does the AD7280ABSTZ have?
    The AD7280ABSTZ has six differential analog input channels.
  4. What is the cell voltage accuracy of the AD7280ABSTZ?
    The cell voltage accuracy is ±1.6 mV.
  5. What is the conversion time per channel for the AD7280ABSTZ?
    The conversion time per channel is 1 μs.
  6. Does the AD7280ABSTZ support cell balancing?
    Yes, it includes cell balancing interface outputs to control external FET transistors for discharging individual cells.
  7. Can multiple AD7280ABSTZ devices be stacked?
    Yes, a daisy-chain interface allows up to eight parts to be stacked without individual device isolation.
  8. What is the operating temperature range of the AD7280ABSTZ?
    The operating temperature range is from -40°C to 105°C.
  9. What is the package type of the AD7280ABSTZ?
    The package type is LQFP-48.
  10. Is the AD7280ABSTZ RoHS compliant?
    Yes, the AD7280ABSTZ is RoHS compliant.

Product Attributes

Function:Battery Monitor
Battery Chemistry:Lithium Ion
Number of Cells:1 ~ 6
Fault Protection:Over/Under Voltage
Interface:SPI
Operating Temperature:-40°C ~ 105°C (TA)
Mounting Type:Surface Mount
Package / Case:48-LQFP
Supplier Device Package:48-LQFP (7x7)
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Same Series
AD7280ABSTZ
AD7280ABSTZ
IC BATT MON LI-ION 1-6CEL 48LQFP
AD7280AWBSTZ-RL
AD7280AWBSTZ-RL
IC BATT MON LI-ION 1-6CEL 48LQFP
AD7280ABSTZ-RL
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Similar Products

Part Number AD7280ABSTZ AD7280AWBSTZ
Manufacturer Analog Devices Inc. Analog Devices Inc.
Product Status Active Active
Function Battery Monitor Battery Monitor
Battery Chemistry Lithium Ion Lithium Ion
Number of Cells 1 ~ 6 1 ~ 6
Fault Protection Over/Under Voltage Over/Under Voltage
Interface SPI SPI
Operating Temperature -40°C ~ 105°C (TA) -40°C ~ 105°C (TA)
Mounting Type Surface Mount Surface Mount
Package / Case 48-LQFP 48-LQFP
Supplier Device Package 48-LQFP (7x7) 48-LQFP (7x7)

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