MAX9938HEUK

1μA ， 4焊球UCSP / SOT23封装，高精度电流检测放大器 1レA, 4-Bump UCSP/SOT23, Precision Current-Sense Amplifier

General Description

The MAX9938 high-side current-sense amplifier offers precision accuracy specifications of VOS less than 500μV max and gain error less than 0.5% max. Quiescent supply current is an ultra-low 1μA. The MAX9938 fits in a tiny, 1mm x 1mm UCSP™ package size or a 5-pin SOT23 package, making the part ideal for applications in notebook computers, cell phones, PDAs, and all battery-operated portable devices where accuracy, low quiescent current, and small size are critical.

Features

♦ Ultra-Low Supply Current of 1µA max

♦ Low 500µV max Input Offset Voltage

♦ Low < 0.5% max Gain Error

♦ Input Common Mode: +1.6V to +28V

♦ Voltage Output

♦ Four Gain Versions Available

   25V/V MAX9938T

   50V/V MAX9938F

   100V/V MAX9938H

   200V/V MAX9938W

♦ Tiny 1mm x 1mm x 0.6mm, 4-Bump UCSP, 5-Pin SOT23, or 2mm x 2mm x 0.8mm, 6-Pin µDFN Packages

Applications

  Cell Phones

  PDAs

  Power Management Systems

  Portable/Battery-Powered Systems

  Notebook Computers