Sub-µA Current Sensor

RD-UAMP-SENSOR

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The Sub-µA Current Sensor is a Kinetis K22F-based current measurement board running on FreeRTOS, for use with the Freedom Development Ecosystem or any other Arduino-like development boards.

This Reference Design allows for nonintrusive interfacing between any MCU and 3.3V shield, and measurement of a large range of low currents (~60 nA – 5 mA). Multiple communication methods are available, including integration with Freedom Sensor Toolbox (CE).

框图

RD-UAMP-SENSOR Block Diagram

Sub-µA Current Sensor Block Diagram
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支持的器件

处理器和微控制器

K2x / KS2x USB

  • K22_120: Kinetis® K22-120 MHz，高性价比，全速USB微控制器(MCU)，基于Arm® Cortex®-M4内核

电源管理

电池充电器

  • MC34673: 1.2单芯锂离子电池/锂聚合物电池充电器

Features

Nonintrusive

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

Compatible

  • Uses the widely popular Arduino connector layout and pinout

Bidirectional

  • 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

购买选项

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  • RD-UAMP-SENSOR

  • Sub-µA Current Sensor.

  • Kit contains:

    • Seamless integration in existing solutions
    • Accurate measurement from 60 nA to 5 mA
    • Onboard LCD module and capacitive buttons for quick access
    • Embeds several communication channels
    • Freedom Sensor Toolbox (CE) support
  • CNY981.27
  • 数量为 1
    • 供货情况: 有货
    • 库存: 10
    • 运单: 正常情况下 1-2个工作日内发货
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