Overview
The INA250A1PW is a 36-V, bidirectional, precision current sense amplifier integrated with a precision shunt resistor, designed and manufactured by Texas Instruments. This device is part of the INA250 family and is optimized for high-accuracy current measurements across a wide range of common-mode voltages from 0 V to 36 V. The INA250A1PW features a 2-mΩ precision shunt resistor and a zero-drift topology, ensuring highly accurate and system-calibrated current sensing. It operates from a single 2.7-V to 36-V supply and is available in a TSSOP-16 package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Shunt Resistor | 2 mΩ | mΩ |
| Shunt Resistor Tolerance | 0.1% (Max) | % |
| Maximum Continuous Current | ±15 A (–40°C to 85°C) | A |
| Operating Supply Voltage | 2.7 V to 36 V | V |
| Quiescent Current | 200 μA to 300 μA | μA |
| Operating Temperature Range | –40°C to 125°C | °C |
| Gain | 200 mV/A (INA250A1) | mV/A |
| Common-Mode Input Range | 0 V to 36 V | V |
| Output Impedance | 1.5 Ω | Ω |
| Bandwidth | 50 kHz (CL = 10 pF) | kHz |
Key Features
- Precision integrated shunt resistor with 0.1% tolerance and 10 ppm/°C temperature coefficient.
- High accuracy with gain error and offset current minimized.
- Four available gain versions: 200 mV/A, 500 mV/A, 800 mV/A, and 2 V/A.
- Wide common-mode range from 0 V to 36 V.
- Bidirectional current sensing capability.
- Low power consumption with a maximum quiescent current of 300 μA.
- Extended operating temperature range from –40°C to 125°C.
- Available in a TSSOP-16 package.
Applications
- Test Equipment
- Power Supplies
- Servers
- Telecom Equipment
- Automotive Systems
- Solar Inverters
- Power Management Systems
Q & A
- What is the primary function of the INA250A1PW?
The INA250A1PW is a precision current sense amplifier designed to measure current with high accuracy across a wide range of common-mode voltages.
- What is the value and tolerance of the integrated shunt resistor?
The shunt resistor is 2 mΩ with a tolerance of 0.1%.
- What are the available gain versions for the INA250 family?
The available gain versions are 200 mV/A, 500 mV/A, 800 mV/A, and 2 V/A.
- What is the operating supply voltage range for the INA250A1PW?
The operating supply voltage range is from 2.7 V to 36 V.
- What is the maximum continuous current the device can handle?
The device can handle up to ±15 A of continuous current from –40°C to 85°C.
- What is the common-mode input range of the INA250A1PW?
The common-mode input range is from 0 V to 36 V.
- What is the output impedance of the INA250A1PW?
The output impedance is 1.5 Ω.
- What are some typical applications of the INA250A1PW?
Typical applications include test equipment, power supplies, servers, telecom equipment, automotive systems, solar inverters, and power management systems.
- What is the package type and pin count of the INA250A1PW?
The device is available in a TSSOP-16 package.
- What is the operating temperature range of the INA250A1PW?
The operating temperature range is from –40°C to 125°C.
