36V, bi-directional, precision current sense amplifier w/int. shunt resistor
Product details
Parameters
Package | Pins | Size
Features
- Precision Integrated Shunt Resistor:
- Shunt Resistor: 2 mΩ
- Shunt Resistor Tolerance: 0.1% (Max)
- 15 A Continuous from –40°C to 85°C
- 0°C to 125°C Temperature Coefficient:
10 ppm/°C
- High Accuracy:
- Gain Error (Shunt and Amplifier): 0.3% (Max)
- Offset Current: 50 mA (Max, INA250A2)
- Four Available Gains:
- INA250A1: 200 mV/A
- INA250A2: 500 mV/A
- INA250A3: 800 mV/A
- INA250A4: 2 V/A
- Wide Common-Mode Range: –0.1 V to 36 V
- Specified Operating Temperature: –40°C to 125°C
Description
The INA250 is a voltage-output, current-sensing amplifier family that integrates an internal shunt resistor to enable high-accuracy current measurements at common-mode voltages that can vary from 0 V to 36 V, independent of the supply voltage. The device is a bidirectional, low- or high-side current-shunt monitor that allows an external reference to be used to measure current flowing in both directions through the internal current-sensing resistor sensor. The integration of the precision current-sensing resistor provides calibration equivalent measurement accuracy with ultra-low temperature drift performance and ensures an optimized Kelvin layout for the sensing resistor is always obtained.
The INA250 family is available in four output voltage scales: 200 mV/A, 500 mV/A, 800 mV/A, and 2 V/A. This device is fully tested and specified for continuous currents up to 10 amps at the maximum temperature of 125°C. The INA250 operates from a single 2.7-V to 36-V supply and draws a maximum of 300 µA of supply current. All INA250 gain versions are specified over the extended operating temperature range (–40°C to 125°C), and are available in a TSSOP-16 package.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
INA250 is a family of current shunt monitor with integrated shunt. The INA250EVM (INA250AxEVM) is intended to provide basic functional evaluation of INA250A1, INA250A2, INA250A3 and INA250A4 devices in the family. The fixture layout is not intended to be a model for the target circuit, nor is it (...)
Features
- INA250EVM consists of one PCB with an option to cut out four individual PCBs one for each of the four devices (INA250A1, INA250A2, INA250A3 and INA250A4).
- Ease of access to all device pins.
- Optional input filter.
- Banana jack terminals on IN+ and IN- pins for ease of connection.
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download TIDA-010011 BOM.pdf (134KB) -
download TIDA-010011 Assembly Drawing.pdf (1564KB) -
download TIDA-010011 PCB.pdf (4603KB) -
download TIDA-010011 CAD Files.zip (7015KB) -
download TIDA-010011 Gerber.zip (799KB)
Design files
-
download TIDA-00614 BOM.pdf (43KB) -
download TIDA-00614 Altium.zip (381KB) -
download TIDA-00614 Gerber.zip (313KB)
Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)
Design files
-
download TIDA-00302 BOM.pdf (52KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
TSSOP (PW) | 16 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by 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, see TI support.