Current sensing reference design for 10 µA to 10 mA: low side: single supply
TIPD104 Reference Design from Texas Instruments
Description
This TI Reference Design provides the theory: component selection: and simulation of a single-supply: precision low-side current sensing solution that can accurately detect load currents from 10uA-10mA. The corresponding linear output is from 100mV to 4.9V. While traditional op amps can be used for such an application: the INA326 instrumentation amplifier enables a differential measurement and minimizes errors due to PCB parasitic. The INA326 can be used in low-side current sensing because the unique internal circuit topology allows for linear rail-to-rail input and output operation. A unique yet simple gain switching network was implemented in order to realize the wide load current range.See more TI Precision Designs
Features
Senses current from 10uA-10mALess than 0.1 % ErrorOutputs 100mV to 4.9VSingle-Supply SolutionLow-Side MeasurementUnique gain-switching networkUtilizes INA326 RRI/O Instrumentation Amplifier This reference design includes:TheoryComponent SelectionTINA-TI SimulationModification Options
Applications
- Oscilloscopes & digitizers
- Data acquisition (DAQ)
- Signal generator
- Programmable DC power supply
Product categories
- Amplifiers
End equipment reference diagrams
