INA185A1IDRLR

Overview

The INA185A1IDRLR is a precision, high-speed current sense amplifier manufactured by Texas Instruments. It features a compact SOT-563 package and supports bidirectional current sensing with low-side capability. The device operates within a supply voltage range of 2.7 V to 5.5 V and maintains an operating temperature range from -40°C to 125°C. Key electrical specifications include a maximum gain error of 0.2%, a minimum common-mode rejection ratio (CMRR) of 96 dB, and a maximum input offset voltage of 55 µV. The amplifier offers gains of 100, 20, 200, or 50 V/V with corresponding bandwidths up to 350 kHz.

Feature Summary

• Bidirectional current sensing capability allows detection of current flow in both directions.
• Low-side capable design enables flexible integration into various circuit topologies.
• High-speed performance supports applications requiring rapid signal response.

Applications

• Battery management systems
• Motor control circuits
• Power supply monitoring

Procurement Notes

Verify the specific gain variant and package suffix against official Texas Instruments documentation before procurement. Ensure compatibility with the target PCB footprint for the SOT-563 package. Confirm that the selected component meets the required thermal and electrical specifications for the intended application environment.

Selection Notes

Select this component when a small form factor is critical alongside high-speed current sensing requirements. The INA185A1IDRLR is suitable for designs needing precise measurement with minimal board space. Consider the available gain options and bandwidth trade-offs when matching system performance needs.

Part Context

This part belongs to the INA185 family of ultra-small current sense amplifiers. It is designed for applications where space constraints are significant but high accuracy and speed are still required. The family includes variants with different gain settings and package options to suit diverse design requirements.

Replacement Considerations

Check for direct pin-compatible substitutes within the INA185 series or other TI current sense amplifiers with similar gain and bandwidth characteristics. Verify that any replacement matches the SOT-563 package dimensions and electrical parameters.