INA199A1RSWT

Current Regulation/Management Overview

The INA199A1RSWT is a single-channel, bidirectional current shunt monitor from Texas Instruments. It features a voltage output and operates with a supply voltage range of 2.7 V to 26 V. The device offers a gain bandwidth product of 80 kHz and a common-mode voltage range up to 12 V. Key electrical parameters include an input offset voltage of 5 µV, an input bias current of 28 µA, and a power consumption of 65 µA. It provides a common-mode rejection ratio of 120 dB and maintains an accuracy of ±1.5%. The component supports high-side or low-side measurements and functions within a temperature range of -40°C to +125°C.

Current Regulation/Management Feature Summary

• Supports both high-side and low-side current sensing applications
• Provides bidirectional measurement capability for accurate current monitoring
• Utilizes zero-drift architecture to minimize offset voltage errors over time

Current Regulation/Management Applications

• Industrial process control systems
• Power management circuits
• Battery protection modules
• Overcurrent protection designs

Current Regulation/Management Procurement Notes

Verify the specific suffix 'RSWT' against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure compatibility with automated pick-and-place equipment if using reel packaging. Cross-reference the exact part number with authorized distributors to confirm availability and authenticity. Check for any recent production changes or obsolescence notices directly from Texas Instruments before finalizing procurement orders.

Current Regulation/Management Selection Notes

Select this component when precise bidirectional current monitoring is required in systems operating between 2.7 V and 26 V. The zero-drift technology makes it suitable for applications demanding high accuracy without frequent calibration. Consider the 12 V common-mode limit when designing high-side sensing circuits. Evaluate the 65 µA quiescent current for battery-powered constraints. Compare performance metrics against other INA199 variants if different gains or packages are needed.

Current Regulation/Management Part Context

The INA199 series represents Texas Instruments' line of precision current shunt monitors designed for versatile sensing applications. This specific model belongs to the A-grade variant family, indicating tighter accuracy specifications compared to standard grades. The RS package denotes a small outline quad flat no-lead configuration, while the WT suffix typically indicates tape and reel packaging for surface-mount assembly. These devices integrate advanced chopper stabilization techniques to achieve low drift characteristics.

Current Regulation/Management Replacement Considerations

Direct substitutes within the same family include INA199A2RSWT and INA199B1RSWT, which share similar pinouts but may differ in gain or accuracy grades. Verify that alternative parts meet the specific gain and common-mode voltage requirements of the original design. Ensure thermal and mechanical compatibility when swapping components.