INA190A2IDCKT

Overview

The INA190A2IDCKT is a unidirectional current sense amplifier from Texas Instruments, designed for high-precision applications. It features a fixed gain of 50 V/V and supports a common-mode voltage range from -200 mV to 40 V. The device operates on a single supply voltage between 1.7 V and 5.5 V with a typical quiescent current of 65 uA. Key electrical specifications include a maximum input offset voltage of 3 uV, an input bias current of 500 pA, and a gain error of 0.06%. It offers a common-mode rejection ratio of 150 dB and a bandwidth of 37 kHz. The component is housed in a SC-70-6 package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Provides ultra-precise current sensing with low input offset voltage and minimal gain error for accurate measurements.
• Supports bidirectional or unidirectional operation with a wide common-mode voltage range extending below ground potential.
• Integrates an enable pin functionality to reduce power consumption during inactive periods.
• Delivers high common-mode rejection ratio to maintain signal integrity in noisy environments.

Applications

• Battery management systems requiring precise cell monitoring
• Industrial process control loops with shunt-based current feedback
• Overcurrent protection circuits in power distribution units

Procurement Notes

Verify the specific suffix IDCKT confirms the SC-70-6 package and tape-and-reel delivery format. Confirm the A2 grade indicates the specified 50 V/V gain and 0.06% gain error accuracy level. Ensure compatibility with your board layout regarding the small outline package dimensions and thermal requirements.

Selection Notes

Select this part when a fixed 50 V/V gain is required for low-side or high-side sensing within a 40 V common-mode window. Consider the SC-70-6 footprint constraints and the need for picoamp-level input bias currents. Evaluate if the 37 kHz bandwidth meets the dynamic response needs of your application compared to higher-speed alternatives.

Part Context

This component belongs to the INA190 family of ultraprecise current sense amplifiers. The series is characterized by its ability to handle high common-mode voltages while maintaining low power consumption. The A2 designation specifically denotes the 50 V/V gain variant within the product line, distinguishing it from other gain options like 20 V/V or 100 V/V.

Replacement Considerations

Check for availability of INA190A2IDCKR (same package, reel) or INA190A2IRSWR (UQFN-10 package). Verify pinout compatibility before substituting with different package types.