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MAX9938TEBS Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX9938TEBS Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 14 page 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 accura- cy, low quiescent current, and small size are critical. The MAX9938 features an input common-mode voltage range from 1.6V to 28V. These current-sense amplifiers have a voltage output and are offered in four gain versions: 25V/V (MAX9938T), 50V/V (MAX9938F), 100V/V (MAX9938H), and 200V/V (MAX9938W). The four gain selections offer flexibility in the choice of the external current-sense resistor. The very low 500μV (max) input offset voltage allows small 25mV to 50mV full-scale VSENSE voltage for very low voltage drop at full-current measurement. The MAX9938 is offered in tiny 4-bump, UCSP (1mm x 1mm x 0.6mm footprint), 5-pin SOT23, and 6-pin μDFN (2mm x 2mm x 0.8mm) packages specified for operation over the -40°C to +85°C extended temperature range. Applications Cell Phones PDAs Power Management Systems Portable/Battery-Powered Systems Notebook Computers Features o Ultra-Low Supply Current of 1µA (max) o Low 500µV (max) Input Offset Voltage o Low < 0.5% (max) Gain Error o Input Common Mode: +1.6V to +28V o Voltage Output o Four Gain Versions Available 25V/V (MAX9938T) 50V/V (MAX9938F) 100V/V (MAX9938H) 200V/V (MAX9938W) o Tiny 1mm x 1mm x 0.6mm, 4-Bump UCSP, 5-Pin SOT23, or 2mm x 2mm x 0.8mm, 6-Pin µDFN Packages 1µA, 4-Bump UCSP/SOT23, Precision Current-Sense Amplifier ________________________________________________________________ Maxim Integrated Products 1 MAX9938T/F/H/W MAX9938T/F/H/W 54 13 2 RS+ RS- GND OUT GND SOT23 UCSP TOP VIEW (BUMPS ON BOTTOM) B1 B2 A1 GND RS+ OUT RS- A2 1 2 3 6 5 4 RS- N.C. RS+ MAX9938FELT μDFN TOP VIEW (PADS ON BOTTOM) OUT N.C. GND DRAWINGS NOT TO SCALE Pin Configurations 19-4110; Rev 6; 1/11 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. EVALUATION KIT AVAILABLE UCSP is a trademark of Maxim Integrated Products, Inc. Ordering Information + Denotes a lead(Pb)-free/RoHS-compliant package. G45 indicates protective die coating. Note: All devices are specified over the -40°C to +85°C extended temperature range. PART PIN- PACKAGE GAIN (V/V) TOP MARK MAX9938TEBS+G45 4 UCSP 25 +AGD MAX9938FEBS+G45 4 UCSP 50 +AGE MAX9938HEBS+G45 4 UCSP 100 +AGF MAX9938WEBS+G45 4 UCSP 200 +AGI MAX9938TEUK+ 5 SOT23 25 +AFFB MAX9938FEUK+ 5 SOT23 50 +AFFC MAX9938HEUK+ 5 SOT23 100 +AFFD MAX9938WEUK+ 5 SOT23 200 +AFGZ MAX9938FELT+ 6 μDFN 50 +ACM |
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