• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

说明

The INA139 and INA169 are high-side, unipolar, current shunt monitors. Wide input common-mode voltage range, high-speed, low quiescent current, and tiny SOT23 packaging enable use in a variety of applications.

Input common-mode and power-supply voltages are independent and can range from 2.7V to 40V for the INA139 and 2.7V to 60V for the INA169. Quiescent current is only 60µA, which permits connecting the power supply to either side of the current measurement shunt with minimal error.

The device converts a differential input voltage to a current output. This current is converted back to a voltage with an external load resistor that sets any gain from 1 to over 100. Although designed for current shunt measurement, the circuit invites creative applications in measurement and level shifting.

特性

• COMPLETE UNIPOLAR HIGH-SIDE CURRENT MEASUREMENT CIRCUIT
• WIDE SUPPLY AND COMMON-MODE RANGE
• INA139: 2.7V to 40V
• INA169: 2.7V to 60V
• INDEPENDENT SUPPLY AND INPUT COMMON-MODE VOLTAGES
• SINGLE RESISTOR GAIN SET
• LOW QUIESCENT CURRENT (60 µA typ)
• SOT23-5 PACKAGE
• APPLICATIONS
  • CURRENT SHUNT MEASUREMENT:
    Automotive, Telephone, Computers
  • PORTABLE AND BATTERY-BACKUP SYSTEMS
  • BATTERY CHARGERS
  • POWER MANAGEMENT
  • CELL PHONES
  • PRECISION CURRENT SOURCE

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