INA185A2IDCKR

Overview

The INA185A2IDCKR is a bidirectional current sense amplifier from Texas Instruments, housed in a 6-pin SC-70 package. It features a fixed gain of 50 V/V and supports a common-mode voltage range from -0.2 V to +26 V. The device operates on a single supply voltage between 2.7 V and 5.5 V with a maximum quiescent current of 260 µA. Key electrical specifications include a bandwidth of 210 kHz, an input offset voltage of ±55 µV (maximum), and a slew rate of 2 V/µs. It provides high precision with a maximum gain error of 0.2% over the extended operating temperature range of -40°C to +125°C.

Feature Summary

• Bidirectional current sensing capability for monitoring charge and discharge cycles
• Integrated matched resistor network minimizes gain error and temperature drift
• Wide common-mode voltage range independent of supply voltage
• Rail-to-rail output swing enables linear operation near ground and supply rails

Applications

• Motor control systems
• Battery monitors and balancers
• Power management circuits
• Lighting control applications
• Solar inverters

Procurement Notes

Verify the specific A2 suffix indicates the 50 V/V gain option when ordering. Confirm the DCKR suffix corresponds to the SC-70 package type required for your layout. Ensure the component meets RoHS standards if applicable to your manufacturing process. Cross-reference the manufacturer part number with authorized distributors to guarantee authenticity and traceability.

Selection Notes

Select this device when bidirectional measurement is required within a 26 V common-mode window. The 50 V/V gain suits applications needing moderate amplification without excessive output saturation. Consider the 210 kHz bandwidth for dynamic load changes. Verify that the SC-70 package dimensions fit the available PCB space constraints compared to larger packages.

Part Context

This component belongs to the INA185 family of high-precision current sense amplifiers. The family offers various gain options (A1, A2, A3, A4) and package choices including SOT-563. The INA185 series is designed for cost-sensitive, space-constrained environments requiring accurate current monitoring in both high-side and low-side configurations.

Replacement Considerations

Other devices within the INA185 family share similar pinouts and functionality but differ in gain or package. Verify compatibility before substitution.