Reference Designs
0-1A: Single-Supply: Low-Side: Current Sensing Solution
Texas Instruments
This TI Verified Design implements a single-supply: low-side current sensing solution that can accurately detect load current from 0-1A. The corresponding linear output range is from 0V to 4.9V. This design relies on the LM7705 inverting charge pump to bias the negative supply of the OPA320 to -0.23V. This setup extends the linear output range of the amplifier below 0V. The circuit's linear operation across the entire 0-1A input range enables calibrated performance to within ±0.003% error.
Features
- 0 - 1 A Current Sense0 to 4.9 V OutputSingle-Supply Solution±0.003% FSR Error (calibrated)±0.0002% Zero Scale Error (calibrated)
Applications
- Oscilloscopes & digitizers
- Aircraft cockpit display
- Interconnect/distribution box
- Data acquisition (DAQ)
- Battery cell formation & test equipment
- Circuit breaker (ACB
- MCCB
- VCB)
Product Categories
- Amplifiers
End Equipment Reference Diagrams
Application Area
End Equipment
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