INA2180A3IDGKR

Overview

The INA2180A3IDGKR is a dual-channel current-sense amplifier manufactured by Texas Instruments. It features a fixed gain of 50 V/V and operates with a supply voltage range of 2.7 V to 5.5 V. The device supports a common-mode voltage range from -0.2 V to +26 V, enabling bidirectional current measurement. Key electrical specifications include a bandwidth of 350 kHz, a maximum input offset voltage of 100 µV, and a typical quiescent current of 355 µA per channel. It is housed in an 8-pin VSSOP package.

Feature Summary

• Dual-channel architecture for simultaneous monitoring of two independent current paths
• Fixed 50 V/V gain configuration simplifies external component selection
• Wide common-mode voltage range supporting high-side and low-side sensing applications
• Rail-to-rail output capability ensures full signal utilization within the supply range

Applications

• Battery management systems in portable electronics
• Overcurrent protection circuits in industrial equipment
• Current monitoring in motor control drives
• Power distribution units and load switches

Procurement Notes

Verify the specific suffix 'A3' against the manufacturer's official datasheet to confirm the fixed gain value, as variations exist within the INA2180 family. Ensure the ordering part number matches the required package type and temperature rating. Cross-reference the manufacturer's latest documentation to confirm RoHS compliance status and any recent product change notices affecting pinout or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when dual-channel precision current monitoring is required within a 26 V common-mode environment. The fixed 50 V/V gain is suitable for applications where the sense resistor voltage drop is small relative to the supply voltage. Consider the 350 kHz bandwidth for dynamic load responses. Evaluate the 355 µA quiescent current against system power budgets. The VSSOP-8 package offers a compact footprint for space-constrained designs compared to larger packages.

Part Context

The INA2180 series belongs to Texas Instruments' portfolio of precision current-sense amplifiers designed for cost-sensitive and space-constrained applications. Unlike higher-end models with programmable gains, this variant utilizes a fixed internal gain structure to minimize external components. It serves as a bridge between basic single-channel sensors and complex multi-channel solutions, providing balanced performance for general-purpose industrial and consumer electronics monitoring tasks.

Replacement Considerations

Direct substitutes within the same family include INA2180A1IDGKR (Gain 200 V/V) and INA2180A4IDGKR (Gain 200 V/V). Verify that the alternative gain setting aligns with the system's expected sense voltage levels. Other compatible devices may include the INA180 series, though pinouts and specifications differ. Always consult the manufacturer's replacement guide to ensure functional equivalence.