INA1650IPW Precision Current Sense Amplifier Overview
The INA1650IPW from Texas Instruments is a high-performance current sense amplifier designed to accurately measure small voltage drops across shunt resistors in diverse electrical systems. This device combines exceptional noise rejection with low power consumption, making it ideal for applications where precise current monitoring is critical for efficiency and safety. IC-fabrikant offers this versatile component as part of its portfolio of reliable sensing solutions for industrial and commercial systems.
Technical Parameters of INA1650IPW
| Parameter | Waarde | Eenheid |
|---|---|---|
| Common-Mode Verwerpingsverhouding (CMRR) | 110 | dB (min, DC to 1kHz) |
| Ruststroom | 1 | mA (max) |
| Ingangsspanningsbereik | -0.3 to +60 | V |
| Gain Accuracy | ??0.5 | % (max) |
| Type verpakking | 8-TSSOP (Thin Shrink Small Outline Package) | |
Operationele kenmerken
| Kenmerk | Specificatie |
|---|---|
| Bedrijfstemperatuurbereik | -40 °C tot +85 °C |
| Bereik voedingsspanning | 2.7V to 36V |
| Bandbreedte | 350kHz |
| Schommeling uitgangsspanning | 0.1V to (VCC – 0.1V) |
| Ingangsoffsetspanning | ??50??V (max) |
Advantages Over Alternative Current Sense Amplifiers
The INA1650IPW outperforms conventional current sense amplifiers in critical areas. Its 110dB CMRR is significantly higher than many alternatives, allowing accurate current measurements even in noisy electrical environments with large common-mode voltages??such as industrial power rails or data center distribution systems.
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Compared to general-purpose amplifiers repurposed for current sensing, its ??0.5% gain accuracy ensures consistent measurement across temperature and voltage variations, eliminating the need for calibration in production. This reduces manufacturing costs while maintaining reliability in precision-critical applications.
Its 1mA quiescent current is lower than many competing devices, minimizing power draw in always-on systems like battery management or standby power monitors. The 8-TSSOP package also saves valuable PCB space compared to larger through-hole alternatives, a key advantage in compact designs like IoT power modules or portable test equipment.
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Unlike amplifiers with limited input ranges, its -0.3V to +60V input capability accommodates a wide variety of system voltages, from low-power 12V circuits to industrial 48V systems, reducing the need for multiple part numbers in product lines.
Typical Applications of INA1650IPW
The INA1650IPW excels in systems requiring precise current monitoring. Key use cases include:
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- Industrial power supplies and motor control systems
- Data center power distribution and energy monitoring
- Battery management systems for portable devices
- Test and measurement equipment
- Overcurrent protection circuits in consumer electronics
Texas Instruments?? Expertise in Sensing Technology
As a Texas Instruments product, the INA1650IPW leverages decades of innovation in analog sensing technology. TI is recognized for developing high-precision amplifiers that balance performance, efficiency, and ease of integration??critical factors in modern electrical systems. Each INA1650IPW undergoes rigorous testing to ensure consistent performance across operating conditions, making it a trusted choice for engineers designing industrial, commercial, and consumer electronics.
Veelgestelde vragen (FAQ)
How does the INA1650IPW ensure accurate current measurements in noisy environments?
Its 110dB CMRR (Common-Mode Rejection Ratio) enables the amplifier to ignore large background voltages (like 48V industrial rails) while precisely measuring small shunt voltages (in the mV range). This noise rejection ensures reliable data even in electrically noisy settings like factories or data centers.
Why is the low quiescent current (1mA) important for system design?
Low quiescent current minimizes power consumption in the amplifier itself, which is critical for energy-efficient systems and battery-powered devices. It ensures the sensing circuit doesn??t significantly impact overall system efficiency, a key consideration in green energy and portable applications.
What benefits does the 8-TSSOP package offer for PCB design?
The 8-TSSOP package??s compact size saves space on densely populated PCBs, allowing more functionality in limited areas. Its surface-mount design also enables automated assembly, improving manufacturing consistency and reducing production costs compared to through-hole alternatives.
Can the INA1650IPW handle both low and high voltage systems?
Yes, its input voltage range (-0.3V to +60V) and supply voltage range (2.7V to 36V) make it compatible with diverse systems, from low-power 12V consumer electronics to 48V industrial equipment. This versatility eliminates the need for multiple amplifier models in product lines.
How does the INA1650IPW contribute to system safety?
By providing accurate real-time current data, it enables rapid detection of overload conditions in power supplies, motors, and batteries. This allows protective circuits to respond quickly, preventing damage to components and reducing fire or failure risks in critical systems.