Overview
The INA240A3QPWRQ1 is a high-precision current sense amplifier manufactured by Texas Instruments, designed for automotive and industrial applications. This component is part of the INA240-Q1 series, which is specifically qualified for automotive use under the AEC-Q100 standard. It is a bidirectional current sense amplifier with enhanced PWM rejection, making it suitable for high-side and low-side current sensing in harsh environments. The INA240A3QPWRQ1 is ideal for applications such as motor control, power management, and battery monitoring, where accurate current measurement is critical.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Channels | 1 | Channel | |
| Gain Bandwidth Product (GBP) | 100 | kHz | |
| Common Mode Voltage (Vcm) | -4 to +80 | V | |
| Common Mode Rejection Ratio (CMRR) | 132 | dB | |
| Input Bias Current (Ib) | 90 | µA | |
| Input Offset Voltage (Vos) | 5 | µV | |
| Supply Voltage (Max) | 5.5 | V | |
| Supply Voltage (Min) | 2.7 | V | |
| Operating Supply Current | 2.4 | mA | |
| Gain Error | 0.05 | % | |
| Operating Temperature Range | -40 to +125 | °C | |
| Package | TSSOP-8 | ||
| 3dB Bandwidth | 400 | kHz | |
| Slew Rate (SR) | 2 | V/µs | |
| Power Dissipation (Pd) | 1.5 | W |
Key Features
- Bidirectional current sensing capability.
- Enhanced PWM rejection for accurate measurements in noisy environments.
- Wide common-mode voltage range from -4 V to +80 V.
- High common-mode rejection ratio (CMRR) of 132 dB.
- Low input offset voltage of 5 µV for precision measurements.
- Qualified for automotive applications under AEC-Q100.
- Available in a compact TSSOP-8 package.
Applications
The INA240A3QPWRQ1 is widely used in automotive and industrial systems where precise current measurement is essential. Typical applications include motor control systems, battery management systems, power inverters, and industrial automation. Its ability to operate in high-noise environments and its wide common-mode voltage range make it particularly suitable for electric vehicles (EVs), hybrid electric vehicles (HEVs), and renewable energy systems. Additionally, its low power consumption and high accuracy make it ideal for portable and battery-powered devices.
Q & A
1. What is the operating temperature range of the INA240A3QPWRQ1?
The operating temperature range is -40°C to +125°C.
2. Is the INA240A3QPWRQ1 suitable for automotive applications?
Yes, it is qualified for automotive use under the AEC-Q100 standard.
3. What is the common-mode voltage range of this component?
The common-mode voltage range is -4 V to +80 V.
4. Does the INA240A3QPWRQ1 support bidirectional current sensing?
Yes, it supports bidirectional current sensing.
5. What is the gain bandwidth product of the INA240A3QPWRQ1?
The gain bandwidth product is 100 kHz.
6. What is the input offset voltage of this amplifier?
The input offset voltage is 5 µV.
7. What package does the INA240A3QPWRQ1 come in?
It is available in a TSSOP-8 package.
8. What is the common-mode rejection ratio (CMRR) of this component?
The CMRR is 132 dB.
9. Can the INA240A3QPWRQ1 operate in noisy environments?
Yes, it features enhanced PWM rejection for accurate measurements in noisy environments.
10. What is the power dissipation of the INA240A3QPWRQ1?
The power dissipation is 1.5 W.
