INA197AIDBVT: High-Side Current Monitor IC - Features, Specs & Applications
INA197AIDBVT: Texas Instruments' Precision High-Side Current Monitor IC
The INA197AIDBVT from Texas Instruments represents the gold standard in high-side current monitoring technology. This comprehensive guide explores why engineers worldwide trust this IC for critical power management applications requiring uncompromising accuracy and reliability.
Product Overview
As part of TI's renowned PMIC portfolio, the INA197AIDBVT (IC CURRENT MONITOR 3% SOT23-5) delivers exceptional performance in current regulation and management. Its innovative design addresses the growing demand for precise current measurement in space-constrained applications.
Key Features and Benefits
- Industry-Leading Accuracy: 3% current measurement accuracy across the full -40 C to +125 C temperature range ensures reliable system performance in extreme conditions
- Wide Voltage Compatibility: -16V to +80V input range supports diverse applications from low-voltage IoT devices to high-power industrial systems
- Space-Efficient Design: The SOT-23-5 package (SC-74A) measures just 2.9mm 1.6mm, ideal for modern miniaturized electronics
- High-Side Sensing Advantage: Measures current without ground path disruption, eliminating measurement errors caused by ground plane variations
- Robust Construction: Qualified for automotive applications with excellent EMI performance and long-term reliability
Technical Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | -16V to +80V |
| Accuracy | 3% (maximum) |
| Operating Temperature | -40 C to +125 C |
| Package Type | SOT-23-5 (SC-74A) |
| Bandwidth | 500kHz (typical) |
| Quiescent Current | 260 A (typical) |
Applications
Industrial Systems
The INA197AIDBVT excels in factory automation equipment, providing:
- Motor current monitoring for predictive maintenance
- Power supply load monitoring
- Overcurrent protection in PLCs
Automotive Electronics
Automotive designers leverage this IC for:
- Battery management systems (BMS)
- LED driver current control
- Load diagnostics and fault detection
Consumer Electronics
Ideal for portable devices requiring:
- Precise battery charge/discharge monitoring
- USB power delivery verification
- Power consumption optimization
Design Considerations
When implementing the INA197AIDBVT:
- Place the IC close to the current shunt resistor to minimize noise pickup
- Use 1% tolerance or better sense resistors for optimal accuracy
- Implement proper decoupling (0.1 F ceramic capacitor recommended)
- Follow TI's layout guidelines for thermal management
Why Choose INA197AIDBVT?
Compared to competing current monitors, the INA197AIDBVT offers:
- Superior Accuracy: 3% vs. typical 5% competitors
- Wider Voltage Range: 80V capability vs. common 36V alternatives
- Better Temperature Stability: Maintains accuracy across -40 C to +125 C
- TI's Quality Assurance: Automotive-grade reliability with full documentation
Purchasing Information
The INA197AIDBVT is available through authorized Texas Instruments distributors. Typical lead times are 6-8 weeks for production quantities. Evaluation boards (INA197EVM) are available for prototyping.
For engineers requiring the ultimate in high-side current monitoring performance, the INA197AIDBVT delivers unmatched precision, reliability and design flexibility. Its combination of wide voltage range, small footprint and industrial-grade robustness makes it the ideal solution for demanding current measurement applications.