Datasheet > AD8451

AD8451

更新时间： 2024-01-08 22:47:31

品牌	Logo	应用领域
亚德诺 - ADI		电池
页数	文件大小	规格书
33页	949K
描述
Low Cost, Precision Analog Front End and Controller for Battery Test/Formation Systems

阅读下载

中文翻译

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

AD8451 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Active	包装说明：	LQFP,
针数：	80	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.56	模拟集成电路 - 其他类型：	ANALOG CIRCUIT
JESD-30 代码：	S-XQFP-G80	JESD-609代码：	e3
长度：	16 mm	湿度敏感等级：	3
负电源电压最大值（Vsup）：		负电源电压最小值（Vsup）：	-31 V
标称负供电电压 (Vsup)：	-15 V	功能数量：	1
端子数量：	80	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	UNSPECIFIED
封装代码：	LQFP	封装形状：	SQUARE
封装形式：	FLATPACK, LOW PROFILE	峰值回流温度（摄氏度）：	260
座面最大高度：	1.6 mm	最大供电电压 (Vsup)：	36 V
最小供电电压 (Vsup)：	5 V	标称供电电压 (Vsup)：	15 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	30	宽度：	16 mm
Base Number Matches：	1

AD8451 数据手册

Low Cost, Precision Analog Front End and

Controller for Battery Test/Formation Systems

Data Sheet

AD8451

FEATURES

GENERAL DESCRIPTION

Integrated constant current and voltage modes with

automatic switchover

Charge and discharge modes

Precision voltage and current measurement

Integrated precision control feedback blocks

Precision interface to PWM or linear power converters

Fixed gain settings

Current sense gain: 26 V/V (typ)

Voltage sense gain: 0.8 V/V (typ)

Excellent ac and dc performance

Maximum offset voltage drift: 0.9 µV/°C

Maximum gain drift: 3 ppm/°C

The AD8451 is a precision analog front end and controller for

testing and monitoring battery cells. A precision fixed gain

instrumentation amplifier (IA) measures the battery charge/

discharge current, and a fixed gain difference amplifier (DA)

measures the battery voltage (see Figure 1). Internal laser

trimmed resistor networks set the gains for the IA and the DA,

optimizing the performance of the AD8451 over the rated

temperature range. The IA gain is 26 V/V and the DA gain is

0.8 V/V.

Voltages at the ISET and VSET inputs set the desired constant

current (CC) and constant voltage (CV) values. CC to CV

switching is automatic and transparent to the system.

Low current sense amplifier input voltage noise: 9 nV/√Hz typ

Current sense CMRR: 108 dB min

TTL compliant logic

A TTL logic level input, MODE, selects the charge or discharge

mode (high for charge, and low for discharge). An analog output,

VCTRL, interfaces directly with the Analog Devices, Inc.,

ADP1972 pulse-width modulation (PWM) controller.

APPLICATIONS

The AD8451 simplifies designs by providing excellent accuracy,

performance over temperature, flexibility with functionality,

and overall reliability in a space-saving package. The AD8451 is

available in an 80-lead, 14 mm × 14 mm × 1.40 mm LQFP and

is rated for an operating temperature of −40°C to +85°C.

Battery cell formation and testing

Battery module testing

FUNCTIONAL BLOCK DIAGRAM

ISREFH/

ISREFL ISMEA ISET IVE0/IVE1

VINT

AD8451

ISVP

CONSTANT

VCLP

CURRENT LOOP

MUX

FILTER

×1

VCTRL

VCLN

ISVN

MODE

BVP

CURRENT

SENSE IA

(CHARGE/

DISCHARGE)

SWITCHING

VOLTAGE

SENSE DA

VOLTAGE

REFERENCE

VREF

0.8

CONSTANT

VOLTAGE LOOP

FILTER

BVN

BVREFH/

BVREFL

BVMEA VSET VVE0/

VVE1

VVP0

VSETBF VINT

Figure 1.

Rev. 0

Document Feedback

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

rightsof third parties that may result fromits use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks andregisteredtrademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Technical Support

www.analog.com

12 3 4 5 6 7...33

中文翻译

下载PDF

与AD8451相关器件

型号	品牌	获取价格	描述	数据表
AD8451_17	ADI	获取价格	Low Cost, Precision Analog Front End and Controller for Battery Test/Formation Systems
AD8451ASTZ	ADI	获取价格	Low Cost Precision Analog Front End and Controller for Battery Test/Formation Systems
AD8451ASTZ-RL	ADI	获取价格	Low Cost Precision Analog Front End and Controller for Battery Test/Formation Systems
AD8451-EVALZ	ADI	获取价格	Low Cost, Precision Analog Front End and Controller for Battery Test/Formation Systems
AD8452	ADI	获取价格	Precision Integrated Analog Front End, Controller
AD8452ASTZ	ADI	获取价格	Precision Integrated Analog Front End, Controller, and PWM for Battery Test and Formation
AD8452ASTZ-RL	ADI	获取价格	Precision Integrated Analog Front End, Controller
AD8452-EVALZ	ADI	获取价格	Precision Integrated Analog Front End, Controller
AD8456-A	COILCRAFT	获取价格	Telecom Transformer
AD845AQ	ADI	获取价格	Precision, 16 MHz CBFET Op Amp

与AD8451相关文章

共享储能电站：数据驱动与政策引领下的黄金机遇
2024-06-26

11
US1M数据手册解读：产品特性、替换型号推荐
2024-06-26

4
解析BAV99LT1G手册：参数分析、替换型号推荐
2024-06-26

5
解读BSS138PW数据手册：产品特性、电气参数及替换型号推荐
2024-06-26

7

产品中心

服务支持

精选活动

关于我们

帮助中心

AD8451

AD8451 技术参数

AD8451 数据手册

与AD8451相关器件

与AD8451相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

AD8451

AD8451 技术参数

AD8451 数据手册

与AD8451相关器件

与AD8451相关文章

您还可以找

您在本页遇到什么问题？