INA2180A3QDGKRQ1

Overview

The INA2180A3QDGKRQ1 is a dual-channel current-sense amplifier from Texas Instruments, qualified to AEC-Q100 standards for automotive applications. It features a fixed gain of 100 V/V and operates within a supply voltage range of 2.7V to 5.5V. The device supports a wide common-mode voltage range from -0.2V to +26V, enabling accurate current monitoring in high-side configurations. Key electrical characteristics include a bandwidth of 350kHz, a maximum input offset voltage of 100µV, and a typical quiescent current of 355µA per channel. It is housed in an 8-VSSOP package.

Feature Summary

• Dual-channel architecture providing independent current sensing capabilities within a single compact package.
• Fixed high gain configuration designed to simplify system design and reduce external component requirements.
• Wide common-mode voltage range allowing operation across various bus voltages without level shifting.
• Automotive-grade qualification ensuring reliability and performance under harsh environmental conditions.

Applications

• Automotive battery management systems (BMS) for cell balancing and state-of-charge estimation.
• Motor control circuits requiring precise phase current monitoring for torque regulation.
• On-board charger (OBC) architectures for input and output current measurement.
• Electronic control unit (ECU) power distribution networks for overcurrent protection.

Procurement Notes

Verify the specific suffix 'A3' confirms the 100 V/V fixed gain variant, as other suffixes may indicate different gains or accuracy grades. Ensure the 'Q' prefix denotes AEC-Q100 automotive qualification suitable for your target application's temperature class. Confirm the 'DGKR' package code matches the required 8-VSSOP footprint and reel specifications for your assembly line. Cross-reference the manufacturer's latest datasheet revision to ensure compliance with any recent pinout or thermal specification updates.

Selection Notes

Select this component when a dual-channel solution is required to save board space compared to using two single-channel amplifiers. The fixed 100 V/V gain is optimal for detecting small voltage drops across low-value shunt resistors while maintaining sufficient output swing for ADCs. Consider the 350kHz bandwidth if higher frequency noise filtering is needed compared to slower alternatives. Evaluate the 355µA quiescent current against strict power budget constraints in battery-operated automotive subsystems.

Part Context

This part belongs to the INA2180 family of dual-channel current-sense amplifiers from Texas Instruments. The family is characterized by its rail-to-rail output and ability to operate with negative common-mode voltages. The INA2180 series is widely used in industrial and automotive sectors where cost-effective, high-precision current monitoring is critical for system safety and efficiency.

Replacement Considerations

Direct substitutes within the same family include the INA2180A1QDGKRQ1 (100 V/V gain) and INA2180A4QDGKRQ1 (200 V/V gain), provided the gain requirement aligns. Single-channel alternatives like the INA181 or INA241 require two packages and do not offer synchronized dual-channel performance. Verify that any replacement maintains the AEC-Q100 qualification and compatible VSSOP-8 packaging for PCB compatibility.