Overview
The INA281A4QDBVRQ1 is a high-precision current sense amplifier manufactured by Texas Instruments. Designed for automotive and industrial applications, this device offers exceptional accuracy and reliability in current sensing tasks. It is part of the INA281 family, which is known for its robust performance in harsh environments. The INA281A4QDBVRQ1 is particularly suited for electric vehicles (EVs), battery management systems (BMS), and power supply monitoring due to its high common-mode voltage range and low offset voltage. Its compact SOT-23 package makes it ideal for space-constrained designs.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 2.7 to 5.5 | V | |
| Common-Mode Voltage Range | -16 to 110 | V | |
| Gain | 20 | V/V | Fixed |
| Offset Voltage | ±25 | µV | Max |
| Bandwidth | 350 | kHz | |
| Operating Temperature | -40 to 125 | °C | |
| Package | SOT-23 | 6-pin | |
| Quiescent Current | 475 | µA | Typical |
| Output Voltage Swing | 0 to Vs - 0.1 | V | |
| Automotive Qualification | AEC-Q100 | Grade 1 |
Key Features
- High Accuracy: Low offset voltage and high gain accuracy ensure precise current measurements.
- Wide Common-Mode Voltage Range: Supports measurements in systems with high voltage fluctuations.
- Automotive-Grade Reliability: Compliant with AEC-Q100 standards for use in automotive environments.
- Compact Design: SOT-23 package enables integration into space-limited applications.
- Low Power Consumption: Optimized for energy-efficient systems.
Applications
The INA281A4QDBVRQ1 is widely used in various industries, including automotive, industrial automation, and consumer electronics. In automotive applications, it is employed in electric vehicles (EVs) for battery management systems (BMS) and motor control. In industrial settings, it is used for power supply monitoring and load management. Additionally, its high precision makes it suitable for consumer electronics such as laptops and smartphones, where accurate current sensing is critical for battery life optimization.
Q & A
1. What is the operating voltage range of the INA281A4QDBVRQ1?
The operating voltage range is 2.7V to 5.5V.
2. What is the common-mode voltage range of this device?
The common-mode voltage range is -16V to 110V.
3. Is the INA281A4QDBVRQ1 suitable for automotive applications?
Yes, it is AEC-Q100 Grade 1 qualified, making it suitable for automotive environments.
4. What is the gain of the INA281A4QDBVRQ1?
The gain is fixed at 20 V/V.
5. What is the typical quiescent current?
The typical quiescent current is 475 µA.
6. Can this device operate in harsh temperature conditions?
Yes, it operates in a temperature range of -40°C to 125°C.
7. What package does the INA281A4QDBVRQ1 come in?
It comes in a 6-pin SOT-23 package.
8. What is the bandwidth of the INA281A4QDBVRQ1?
The bandwidth is 350 kHz.
9. Is the INA281A4QDBVRQ1 suitable for battery management systems?
Yes, its high precision and wide voltage range make it ideal for BMS applications.
10. What is the maximum offset voltage?
The maximum offset voltage is ±25 µV.
