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  5. MAX40204


Features and Benefits

  • -0.1V to 36V Wide Input Common Mode
  • Ultra-Low, 2μV Input Offset Voltage
  • On-the-Fly Gain Setting Input
  • Bidirectional/Unidirectional Current Sensing
  • 20nA (max) Input Bias Current
  • Extremely Low, 50nV/°C Input Offset Tempco
  • 0.05% Gain Error
  • 21μA Supply Current
  • 70nA (typ) Shutdown Current
  • 1.7V to 5.5V Single Supply Operating Range
  • Space-Saving 8-Bump WLP and 8-Pin TDFN Packages

Product Details

The MAX40204 is a high-precision, bidirectional, high-side current-sense amplifier (CSA) with a wide input common-mode range from -0.1V (ground sensing) to 36V.

The device’s ultra-low 2μV input offset voltage allows the use of small sense resistor to reduce power dissipation and a very low, 0.05% gain error ensures measurement accuracy.

The MAX40204 offers two gain options using a logic-level input (GAIN) that provides the flexibility to change the gain on the fly. On-the-fly gain adjustment capability allows the system to enhance accuracy when measuring current much smaller than set full-scale level. See Table 1 for gain configurations. Additionally, the MAX40204 supports unidirectional and bidirectional current sensing with an external voltage applied to a reference input, REF.

The MAX40204 operates with single-supply in the range of 1.7V to 5.5V while consuming only 21μA. Low operating supply current and 70nA (typ) shutdown current help extend battery life and make the MAX40204 ideal for portable and battery-operated devices.

The MAX40204 is available in a small 8-bump, 0.35mm-pitch WLP (1.468mm x 0.848mm) and 8-pin TDFN (2mm x 2mm) packages and is specified over the -40°C to +125°C extended operating temperature range.


  • Base Station
  • Current Sensing in Power Management Systems
  • Medical Instruments
  • Notebook Computers
  • Portable and Battery-Operated Systems
  • Smart Phones and Tablets

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Tools & Simulations


Product Recommendations

MAX40204 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
MAX40204ANA+ Material Declaration Reliability Data 8-WLCSP-N/A
MAX40204ANA+T Material Declaration Reliability Data 8-WLCSP-N/A
Wafer Fabrication Data

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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.