CIRCUIT060031

3-decade, load-current sensing circuit

CIRCUIT060031

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Overview

This single-supply, low-side, current-sensing solution accurately detects load current between 10 μA and 10 mA. A unique yet simple gain switching network was implemented to accurately measure the three decade load current range.
Features
  • Input: 10 μA to 10 mA
  • Output: 100 mV to 4.9 V
  • Supply:
    • Vcc = 5 V
    • Vee = 0V
    • Vref = 0V

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Downloads

Design tool

Simulation for 3-Decade, Load-Current Sensing Circuit SBOC498.ZIP (28KB)

Supported products & hardware

Supported products & hardware

Instrumentation amplifiers
INA326 Precision, Low Drift, CMOS Instrumentation Amplifier

Technical documentation

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Type Title Date
* Circuit design 3-decade, load-current sensing circuit (Rev. A) Feb. 01, 2019

Related design resources

Design tools & simulation

SIMULATION TOOL
PSPICE-FOR-TI PSpice® for TI design and simulation tool TINA-TI SPICE-based analog simulation program
CALCULATION TOOL
ANALOG-ENGINEER-CALC Analog engineer's calculator

Reference designs

REFERENCE DESIGN
TIPD104 Current Sensing Solution, 10uA-10mA, Low-side, Single Supply

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