Overview
The INA190A2IDDFR is a precision current sense amplifier manufactured by Texas Instruments. Designed for high-accuracy current measurement, this product is part of the INA190 family, which is widely used in applications requiring precise current monitoring and control. The INA190A2IDDFR is housed in a compact DFN (Dual Flat No-Lead) package, making it suitable for space-constrained designs. Its market positioning targets industries such as industrial automation, automotive electronics, and consumer electronics, where reliable and accurate current sensing is critical. The device stands out for its low offset voltage, wide input voltage range, and high common-mode rejection ratio (CMRR), making it a competitive choice for engineers seeking robust current measurement solutions.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage Range | 2.7 to 5.5 | V | |
| Input Common-Mode Voltage Range | -0.2 to +40 | V | |
| Gain | 20 | V/V | Fixed |
| Offset Voltage (Max) | ±150 | µV | |
| Bandwidth | 350 | kHz | |
| Quiescent Current | 65 | µA | |
| Operating Temperature Range | -40 to +125 | °C | |
| Package | DFN-8 | 2mm x 2mm |
Key Features
- High Accuracy: Low offset voltage and high CMRR ensure precise current measurement.
- Wide Input Voltage Range: Supports common-mode voltages from -0.2V to +40V, making it versatile for various applications.
- Low Power Consumption: Quiescent current of just 65µA enhances energy efficiency.
- Compact Design: DFN-8 package with a small footprint is ideal for space-constrained applications.
- Fixed Gain: Eliminates the need for external components, simplifying design and reducing cost.
Applications
The INA190A2IDDFR is widely used in applications requiring accurate current sensing and monitoring. In industrial automation, it is employed in motor control systems and power management units to ensure efficient operation. In automotive electronics, it is used in battery management systems (BMS) and load monitoring circuits to enhance safety and performance. Additionally, it finds applications in consumer electronics, such as smartphones and laptops, for battery charge/discharge monitoring. Its robust design and high accuracy make it a reliable choice for these demanding environments.
Q & A
1. What is the gain of the INA190A2IDDFR?
The INA190A2IDDFR has a fixed gain of 20 V/V.
2. What is the input common-mode voltage range?
The input common-mode voltage range is from -0.2V to +40V.
3. What is the supply voltage range?
The supply voltage range is 2.7V to 5.5V.
4. What is the maximum offset voltage?
The maximum offset voltage is ±150µV.
5. What is the operating temperature range?
The operating temperature range is -40°C to +125°C.
6. What package does the INA190A2IDDFR use?
It uses a DFN-8 package with dimensions of 2mm x 2mm.
7. What is the quiescent current?
The quiescent current is 65µA.
8. What is the bandwidth of the device?
The bandwidth is 350kHz.
9. Is the INA190A2IDDFR suitable for automotive applications?
Yes, it is suitable for automotive applications, particularly in battery management systems and load monitoring.
10. What are the key advantages of the INA190A2IDDFR?
The key advantages include high accuracy, wide input voltage range, low power consumption, and a compact design.
