INA199C3RSWT

Current Regulation/Management Overview

The INA199C3RSWT is a single-channel, bidirectional current sense amplifier from the Texas Instruments INA199 series. It features a fixed gain of 200 V/V and operates within a supply voltage range of 2.7 V to 26 V. The device supports a common-mode voltage up to 12 V and offers a high common-mode rejection ratio of 120 dB. Key electrical specifications include an input offset voltage of 5 uV, a gain error of 0.03%, and a quiescent current of 65 uA. It utilizes a UQFN-10 package and functions reliably across an operating temperature range of -40°C to +125°C.

Current Regulation/Management Feature Summary

• Zero-drift architecture ensures low input offset voltage and minimal drift over temperature
• Bidirectional sensing capability allows detection of current flow in both directions
• High common-mode rejection ratio maintains accuracy under varying common-mode conditions

Current Regulation/Management Applications

• Battery management systems requiring precise bidirectional current monitoring
• Industrial process control loops with shunt-based current sensing
• Overcurrent protection circuits in power distribution units

Current Regulation/Management Procurement Notes

Verify the specific suffix 'WT' against the manufacturer's official documentation to confirm tape-and-reel packaging details and any distinct marking codes. Ensure compatibility with standard surface-mount assembly processes for the UQFN-10 footprint. Cross-reference the part number with the latest datasheet revision to validate all electrical parameters before finalizing procurement orders.

Current Regulation/Management Selection Notes

Select this component when a fixed 200 V/V gain is required for high-side or low-side sensing applications. The zero-drift technology makes it suitable for precision measurements where offset voltage stability is critical. Consider the 12 V common-mode limit and 26 V supply range to ensure alignment with system voltage requirements.

Current Regulation/Management Part Context

This part belongs to the INA199 family of zero-drift current sense amplifiers. The 'C3' designation indicates a fixed gain of 200 V/V. The 'RSW' prefix identifies the UQFN-10 package type. The 'T' suffix typically denotes tape-and-reel packaging, while 'WT' may indicate a specific reel configuration or manufacturing variant defined by Texas Instruments.

Current Regulation/Management Replacement Considerations

INA199C3RSWR shares identical electrical characteristics and pinout but differs in packaging format (reel vs. cut tape). Other variants within the INA199 series offer different gains such as 100 V/V or 50 V/V.