MAX4238

超低失调/漂移、低噪声、高精度、SOT23封装放大器


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说明

MAX4238/MAX4239是两种低噪声,低漂移,超高精度运放,通过采用自校零技术,它们的直流失调和漂移近似于零。这种自校准方法可以连续地测量输入失调并对其进行补偿,消除了时漂、温漂及1/f噪声造成的漂移。这两种器件均能满摆幅输出,工作于2.7V至5.5V单电源,电流消耗仅600µA。关断模式可以使电源电流降至0.1µA。

MAX4238为单位增益稳定,增益带宽积1MHz,而未补偿的MAX4239的稳定增益AV ≥ 10V/V,增益带宽积为6.5MHz。两种芯片均提供8引脚窄型SO封装、6引脚TDN封装和6引脚SOT23封装。
MAX4238、MAX4239:典型工作电路 MAX4238、MAX4239:典型工作电路 放大+

关键特性

  • 直流参数可理想用于高精度传感器接口
    • 0.1µV超低失调电压
      • +25°C时,最大2.0µV
      • -40°C至+85°C时,最大2.5µV
      • -40°C至+125°C时,最大3.5µV
    • 低漂移:10nV/°C
    • 低噪声:1.5µVP-P (直流至10Hz)
    • 150dB AVOL,电源抑制比为140dB,共模抑制比为140dB
    • 高增益带宽乘积
      • 1MHz (MAX4238)
      • 6.5MHz (MAX4239)
    • 接地检测输入
    • 满摆幅输出(RL = 1kΩ)
  • 低功耗补偿降低系统电源要求
    • 2.7V至5.5V单电源供电
    • 低电源电流,仅600µA
    • 关断模式下耗流仅为0.1µA

应用

  • 电子测量
  • 仪表放大器
  • 医疗仪表
  • 应变仪
  • 热电偶

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX4238EVKIT: MAX4238评估板
产品可靠性报告: MAX4238.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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    类型 编号 标题
    评估板9121MAX4238EVKIT MAX4238评估板