Sub-µA Current Sensor


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Block Diagram

RD-UAMP-SENSOR Block Diagram

Sub-µA Current Sensor Block Diagram

Supported Devices

Processors and Microcontrollers

K2x / KS2x USB

Power Management

Battery Chargers



  • Plugs in-between any existing 3.3V MCU + shield solution without requiring any firmware changes


  • Uses the widely popular Arduino connector layout and pinout


  • Ability to measure both MCU and shield currents separately

High precision

  • Auto-switching shunt resistor bank for optimal range selection, accurate current-sense amplifier and 16-bit sampling depth

High speed

  • Optimized processing pipeline enables acquisition @ 88 kSa/s

LCD module

  • Embeds capacitive touch buttons and an LCD module to provide quick and easy access to a control menu

I²C sensor emulation

  • Can be accessed through a standard I²C interface and virtual register map

Bluetooth module header

  • Embeds a header for connecting an off-the-shelf UART-to-Bluetooth module

USB connector

  • Enables the creation of highly optimized communication channels using the USB stack, or through a virtual serial port

Buy Options


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  • Sub-µA Current Sensor.

  • $136.62 USD
  • For a quantity of 1
    • Availability: In stock
    • Inventory: 10
    • Shipping: Normally ships 1-2 business days
Buy from NXPBuy From Distributor


Quick reference to our documentation types.

2 documents

Design Resources

Design Files

3 design files


2 software files

Note: For better experience, software downloads are recommended on desktop.


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