INA199A3DCKR

Current Regulation/Management Overview

The INA199A3DCKR is a single-channel, bidirectional current sense amplifier manufactured by Texas Instruments. It operates within a supply voltage range of 2.7 V to 26 V and supports common-mode voltages up to 12 V. The device features a fixed gain of 200 V/V, an input offset voltage of 5 µV, and a gain bandwidth product of 14 kHz. It draws 115 µA of operating current and offers a common-mode rejection ratio of 120 dB. Packaged in a compact SC-70-6 surface-mount case, it functions reliably across an extended temperature range from -40°C to +125°C.

Current Regulation/Management Feature Summary

• Bidirectional sensing capability for both high-side and low-side current monitoring applications
• Ultra-low input offset voltage ensures high measurement accuracy without external calibration
• Zero-drift architecture maintains precision over varying temperature conditions
• Compact SC-70-6 package design facilitates space-constrained PCB layouts

Current Regulation/Management Applications

• Battery management systems in portable electronics
• Overcurrent protection circuits in industrial equipment
• Load switching control in consumer devices
• Current monitoring in automotive subsystems

Current Regulation/Management Procurement Notes

Verify the specific suffix 'A3' confirms the 200 V/V gain variant during procurement. Ensure the 'DCKR' designation matches the required SC-70-6 tape-and-reel packaging format. Confirm RoHS compliance status aligns with project regulatory requirements. Validate that the humidity sensitivity level meets storage and reflow soldering specifications for your manufacturing process.

Current Regulation/Management Selection Notes

Select this component when bidirectional current measurement is required with minimal offset error. The 200 V/V gain suits applications needing high resolution for small voltage drops across shunt resistors. Consider the 12 V common-mode limit; higher voltage applications require different family members. The low quiescent current makes it suitable for battery-powered designs where power efficiency is critical.

Current Regulation/Management Part Context

This part belongs to the INA199 series of zero-drift current sense amplifiers. It shares the same core architecture as other variants like INA199A1 and INA199B2 but differs in fixed gain settings. The DCKR package is standard for Texas Instruments' low-pin-count analog ICs, ensuring compatibility with existing footprint libraries for similar operational amplifiers.

Current Regulation/Management Replacement Considerations

INA199A1DCKR: Offers different gain characteristics. INA199B2DCKR: Alternative gain option within the same package. INA214AQDCKRQ1: Automotive-grade alternative with different performance metrics.