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