Overview
The INA240A2QPWRQ1, manufactured by Texas Instruments, is a high-precision current sense amplifier designed for automotive applications. This integrated circuit (IC) falls under the category of linear amplifiers, specifically optimized for current sensing with enhanced PWM rejection capabilities. It is part of the Automotive, AEC-Q100, Zero-Drift series, ensuring reliability and performance in demanding environments. The INA240A2QPWRQ1 is particularly suited for systems requiring precise current measurements, such as motor drives and solenoid control systems, where it provides accurate readings even in the presence of large common-mode transients.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Amplifier Type | Current Sense | - | - |
| Circuit Number | 1 | - | - |
| Output Type | - | - | - |
| Slew Rate | 2 | V/μs | - |
| -3dB Bandwidth | 400 | kHz | - |
| Input Bias Current | 90 | μA | - |
| Input Offset Voltage | 5 | μV | - |
| Supply Current | 1.8 | mA | - |
| Supply Voltage | 2.7 to 5.5 | V | - |
| Operating Temperature | -40 to 125 | °C | - |
| Package | 8-TSSOP | - | 4.40mm wide |
Key Features
- Enhanced PWM rejection for precise current measurement in systems with large common-mode transients.
- Wide common-mode voltage range from -4V to 80V, independent of supply voltage.
- Low offset voltage and zero-drift architecture ensure high accuracy.
- Available in fixed gain options: 20V/V, 50V/V, 100V/V, and 200V/V.
- Extended operating temperature range from -40°C to +125°C, suitable for automotive applications.
Applications
The INA240A2QPWRQ1 is widely used in automotive systems, particularly in motor drives and solenoid control systems, where precise current sensing is critical. Its ability to operate in harsh environments and provide accurate measurements makes it ideal for applications such as battery management systems, power inverters, and industrial automation. Additionally, its enhanced PWM rejection feature ensures reliable performance in systems with high levels of electrical noise.
Q & A
1. What is the operating voltage range of the INA240A2QPWRQ1?
The operating voltage range is from 2.7V to 5.5V.
2. What is the purpose of the enhanced PWM rejection feature?
It provides high levels of suppression for large common-mode transients, ensuring accurate current measurements in systems with PWM signals.
3. What are the fixed gain options available for this amplifier?
The fixed gain options are 20V/V, 50V/V, 100V/V, and 200V/V.
4. What is the common-mode voltage range of the INA240A2QPWRQ1?
The common-mode voltage range is from -4V to 80V.
5. What is the maximum supply current of this amplifier?
The maximum supply current is 1.8mA.
6. What is the operating temperature range for this device?
The operating temperature range is from -40°C to +125°C.
7. What package type is the INA240A2QPWRQ1 available in?
It is available in an 8-TSSOP package.
8. Is the INA240A2QPWRQ1 suitable for automotive applications?
Yes, it is part of the Automotive, AEC-Q100 series, making it suitable for automotive applications.
9. What is the input offset voltage of this amplifier?
The input offset voltage is 5μV.
10. What is the -3dB bandwidth of the INA240A2QPWRQ1?
The -3dB bandwidth is 400kHz.
