Low-Drift Bidirectional Single-Supply Low-Side Current Sensing Reference Design
View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.
Key Document
Description
This Verified TI Precision Design implements a low-drift, bi-directional, low-side, single-supply current sensing solution that measures load currents from -2.5 A to +2.5 A. The output range is from 250 mV to 2.75 V, with 0 A current centered at 1.5 V. To achieve low-drift performance, the solution utilizes the INA213B and REF2030. The design’s functionality and performance were verified by fabricating a PCB and measuring results over temperature from -40 °C to 125 °C.
Features
- Low-side current sensing
- Measured load current: +/-2.5 A
- 250mV to 2.75V output
- 0 A centered at 1.5 V
- ±0.0522% Full-scale range error (-40 °C to 125 °C)
- Low-drift, Single-supply
View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.
Schematic/Block Diagram
Quickly understand overall system functionality.

Download Schematic
Test Data
Get results faster with test and simulation data that's been verified.

Download Test Data
Bill of Materials (BOM)
Find the complete list of components in this reference design.
Download BOM
TI Devices (9)
Order samples, get tools and find more information on the TI products in this reference design.
Sample & Buy |
Design Kits & Evaluation Modules |
INA213 |
26V, Bi-Directional, Zero-Drift, Low-/High-Side, Voltage Output Current Sense Amplifier |
Current sense amplifiers |
Sample & Buy |
View Design Kits & Evaluation Modules |
REF1925 |
Dual Output Vref and Vref/2 Voltage Reference |
Voltage references |
Sample & Buy |
Not Available |
REF1930 |
Dual Output Vref and Vref/2 Voltage Reference |
Voltage references |
Sample & Buy |
Not Available |
REF1933 |
Dual Output Vref and Vref/2 Voltage Reference |
Voltage references |
Sample & Buy |
View Design Kits & Evaluation Modules |
REF1941 |
Dual Output Vref and Vref/2 Voltage Reference |
Voltage references |
Sample & Buy |
Not Available |
REF2025 |
8ppm/°C Drift, Low-Power, Dual-Output Vref and Vref/2 Voltage Reference |
Voltage references |
Sample & Buy |
Not Available |
REF2030 |
Low-Drift, Low-Power, Dual-Output Vref and Vref/2 Voltage Reference |
Voltage references |
Sample & Buy |
Not Available |
REF2033 |
Low-Drift, Low-Power, Dual-Output Vref and Vref/2 Voltage Reference |
Voltage references |
Sample & Buy |
View Design Kits & Evaluation Modules |
REF2041 |
Low-Drift, Low-Power, Dual-Output Vref and Vref/2 Voltage Reference |
Voltage references |
Sample & Buy |
Not Available |
CAD/CAE symbols
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Step 3: Open the .bxl file with the Ultra Librarian software.
You can always access the complete CAD/CAE Symbols database at http://webench.ti.com/cad/
Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a (free download.).
The UL Reader is a subset of the Ultra Librarian toolset that can generate, import, and export components and their attributes in virtually any EDA CAD/CAE format.
Technical Documents
View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.
User guides (1)
Title | Abstract | Type | Size (KB) | Date |
| | PDF | 842 |
16 Jun 2014
|
Design files (3)
| | ZIP | 282 |
05 Jun 2014
|
| | PDF | 110 |
05 Jun 2014
|
| | PDF | 92 |
05 Jun 2014
|
Related Tools & Software
Support & training
Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.
Search answers from TI experts
Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.
If you have questions about quality, packaging, or ordering TI products visit our Support page.