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ADM4073:  Low Cost, Voltage Output, High-side Current Sense Amplifier

Product Details

The ADM4073 is a low-cost, high-side current-sense amplifier, and features a voltage output that does not require gain setting resistors. This makes it ideal for small portable applications such as cell phones, notebook computers, PDAs, and other systems where current monitoring is crucial. High-side current monitoring ensures the ground path is not interrupted making the ADM4073 particularly useful in rechargeable battery powered systems and the wide 1.8MHz bandwidth makes it suitable for use inside battery-charger control loops. The input common-mode range of +2V to +28V is independent of the supply voltage.

The combination of three gain versions and a selectable external-sense resistor sets the full-scale current reading. The ADM4073 offers a high level of integration, resulting in a simple and compact current-sense solution.

The ADM4073 operates from a +3V to +28V single supply and draws only 0.5mA of supply current. This device is specified over the automotive operating temperature range (-40°C to +125°C) and is available in a 6-pin SOT-23 package.


  • Low-Cost, Compact, Current-Sense Solution
  • Three Gain Versions Available:
    +20V/V (ADM4073T)
    +50V/V (ADM4073F)
    +100V/V (ADM4073H)
  • ±1.0° Full-Scale Accuracy
  • 500µA Supply Current
  • Wide 1.8MHz Bandwidth
  • +3V to +28V Operating Supply
  • Wide +2V to +28V Common-Mode Range Independent of Supply Voltage
  • Operates from -40°C to +125°C
  • Available in a 6-Pin SOT-23 Package
  • Pin for Pin Compatible with MAX4073

Functional Block Diagram for ADM4073

Of Note ...

Analog Devices also has current monitors with onboard I2C ADC's to view these products please go to the ADM1191 and ADM1192 product pages.


Title Content Type File Type
ADM4073: Low Cost, Voltage Output, High-Side, Current-Sense Amplifier Data Sheet (Rev 0, 10/2006) (pdf, 263 kB) Data Sheets PDF
AN-669: Effectively Applying the AD628 Precision Gain Block  (pdf, 193 kB) Application Notes PDF
Current Measurement in Solenoids for Automotive Control Systems  (pdf)
by Scott Beversdorf and Charles Whiting, Analog Devices, Inc. (Analog Dialogue 38-04, April 2004)
Technical Articles PDF
Power System Management (Spring 2007)  (pdf, 1170 kB) Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

ADM4073 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADM4073FWRJZ-REEL7 Status: Production 6 ld SOT-23 6 Ind Reel, 3000 - $0.99 Y  Material Info PCN Purchase Sample
ADM4073HWRJZ-REEL7 Status: Production 6 ld SOT-23 6 Ind Reel, 3000 - $0.99 Y  Material Info PCN Purchase Sample
ADM4073TWRJZ-REEL7 Status: Production 6 ld SOT-23 6 Ind Reel, 3000 - $0.99 Y  Material Info PCN Purchase Sample
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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