WMSIC Electronic Components

LX INA180A3IDBVR(LX) INA180A3IDBVR

ModelINA180A3IDBVR(LX)
PackageSOT-23-5
BrandLX
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LX INA180A3IDBVR(LX)
Type
LX
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LX
Electronic Component
INA180A3IDBVR(LX)
Electronic Component
100V/V
Electronic Component
1
Package
SOT-23-5
Electronic Component
150kHz
Electronic Component
Current Sense Amplifier
Electronic Component
0.064g
Electronic Component
1
Common Mode Voltage
200mV~30V
Electronic Component
BM0264498255
Operating Temperature
40℃~+125℃
Voltage
±30V
Amplifier
1
Output Current
8mA

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

INA180A3IDBVR(LX) 电流感应放大器产品概述

一、核心定位与典型应用场景

INA180A3IDBVR(LX)是灵星芯微推出的单路高精度电流感应放大器,专为宽电压范围、低功耗场景下的电流监测设计,核心增益固定为100V/V,可直接将分流电阻上的微伏级电压信号放大至适合ADC采样的毫伏/伏特级范围。

其典型应用覆盖以下领域:

  1. 电源管理系统:开关电源输出电流监测、锂离子电池组充放电电流检测、DC-DC转换器效率优化;
  2. 工业控制:电机驱动电流反馈、PLC模拟量输入模块电流监测、变频器负载电流检测;
  3. 消费电子:快充充电器电流限制、便携式设备电池电流监测、无线充电功率控制;
  4. 汽车电子(辅助级):车载小功率负载(如车灯、传感器)电流监测(适配-40℃~125℃工作温度)。

二、关键电性能参数亮点

这款放大器的核心性能围绕精准度、宽适应性、低功耗三大维度设计,关键参数如下:

1. 宽共模电压范围(-200mV~30V)

支持双向电流检测(共模电压可正可负),无需额外电平转换电路。例如:电池充电时分流电阻共模电压低至-200mV,放电时可达30V,完全覆盖常见电池/电源系统的电压范围。

2. 高精准度信号放大

  • 固定增益100V/V(批量应用无需校准,一致性好);
  • 输入失调电压(Vos)仅100uV,失调电压温漂(Vos TC)1uV/℃,-40℃~125℃范围内总失调误差约180uV,可忽略;
  • 输入失调电流(Ios)50nA,对高阻抗输入信号影响极小。

3. 低功耗与小尺寸

  • 静态电流(Iq)仅175uA,适合电池供电的便携设备,延长续航;
  • 采用SOT-23-5封装,尺寸约2.9mm×1.6mm,大幅节省PCB空间。

4. 动态性能满足高频需求

  • 带宽150kHz,可有效放大100kHz开关频率的电源电流纹波;
  • 压摆率(SR)6V/us,输出响应速度快,适配电机启动等动态电流场景。

5. 强抗干扰能力

共模抑制比(CMRR)100dB,可抑制电源纹波、电磁干扰等共模噪声,确保输出信号稳定。

6. 灵活的电源与输出能力

  • 单电源供电范围2.7V~5.5V,兼容3.3V/5V MCU/ADC电源,无需双电源;
  • 输出电流8mA,可直接驱动12位/16位ADC输入(ADC输入电流≤1uA),无需额外缓冲。

三、封装与工作环境适应性

  • 封装类型:SOT-23-5,引脚定义清晰(V+、IN-、IN+、GND、OUT),焊接工艺成熟,适合自动化贴片;
  • 工作温度范围:-40℃~+125℃,符合工业级标准,可在户外、车载等恶劣环境稳定工作;
  • 电源耐受性:最大电源宽度Vdd-Vss≤6V,兼容常见电源波动。

四、应用设计注意事项

  1. 分流电阻选择:根据最大电流I_max计算,输出电压≤Vdd-0.5V(避免饱和)。例:5V电源下,输出最大4.5V,则V_sense_max=45mV,R_s=45mV/I_max;
  2. 电源去耦:V+引脚与GND间并联0.1uF陶瓷电容(靠近芯片),滤除高频噪声;
  3. 输入保护:若共模电压超范围,IN+/IN-串联100Ω~1kΩ限流电阻,并联TVS二极管(如SMBJ5.0);
  4. 负载匹配:输出负载R_L≥625Ω(5V电源下,8mA输出对应的最小负载),避免电压跌落。

五、总结

INA180A3IDBVR(LX)以宽共模电压、精准度、低功耗、小尺寸为核心优势,覆盖消费电子到工业控制的多场景电流监测需求。其无需校准、兼容单电源的设计,可简化电路、降低成本,是电流检测方案的优选器件。

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