INA199B3RSWR

Current Regulation/Management Overview

The INA199B3RSWR is a bi-directional, zero-drift current shunt monitor manufactured by Texas Instruments. It operates with a supply voltage range of 2.7 V to 26 V and supports both low-side and high-side measurements. The device features a fixed gain of 200 V/V and offers a maximum gain error of 0.03%. Key electrical specifications include an input offset voltage of 5 µV, a common-mode rejection ratio (CMRR) of 120 dB, and a bandwidth product of 14 kHz. It functions within a temperature range of -40°C to +125°C and is housed in a 10-UQFN package.

Current Regulation/Management Feature Summary

• Zero-drift architecture ensures minimal offset voltage drift over temperature variations
• Bi-directional capability allows accurate measurement of current flow in both directions
• Supports both low-side and high-side current sensing configurations
• High common-mode rejection ratio maintains accuracy in noisy environments

Current Regulation/Management Applications

• Battery management systems requiring precise bidirectional current monitoring
• Industrial process control loops for load regulation
• Power supply output current limiting and protection circuits
• Motor drive current sensing applications

Current Regulation/Management Procurement Notes

Verify the specific suffix 'B3' confirms the 200 V/V gain setting and 0.03% gain error specification. Ensure the 'RSWR' suffix corresponds to the 10-UQFN package and tape-and-reel packaging format. Confirm RoHS compliance and lead-free status as indicated in official documentation before finalizing procurement orders.

Current Regulation/Management Selection Notes

Select this component when high precision is required without external calibration due to its zero-drift technology. The 200 V/V gain is suitable for detecting small voltage drops across low-value shunt resistors. Consider the 26 V maximum common-mode voltage limit relative to the system's operating voltage. The UQFN package is appropriate for space-constrained PCB layouts.

Current Regulation/Management Part Context

This part belongs to the INA199 family of current sense amplifiers from Texas Instruments. The family is characterized by zero-drift performance and bi-directional operation. The 'B3' designation specifically indicates the gain configuration, distinguishing it from other variants like A2 or C3 which offer different gain values within the same functional series.

Current Regulation/Management Replacement Considerations

INA199A2RSWR: Offers 100 V/V gain instead of 200 V/V. INA199C3RSWR: Maintains 200 V/V gain but may have different accuracy grades. Verify pin compatibility and gain requirements when substituting.