INA190A2NDDFREP

Overview

The INA190A2NDDFREP is a bidirectional, low-power, zero-drift current sense amplifier from the enhanced product (EP) series. It features a fixed gain of 50 V/V and operates with a supply voltage range of 1.7 V to 5.5 V. The device supports common-mode voltages from -0.2 V to +40 V and includes an enable pin for power management. It is housed in an SOT-23-THIN-8 package and is specified for operation over an extended temperature range of -55°C to +150°C.

Feature Summary

• Zero-drift architecture ensures high precision with low offset voltage and drift across the operating temperature range.
• Capacitively coupled input stage provides extremely low input bias currents, enabling accurate microamp-level measurements.
• Integrated digital enable pin allows the device to enter a low-power disabled state with minimal supply current draw.
• Bidirectional sensing capability is achieved through an external reference voltage applied to the REF pin.

Applications

• Avionics systems
• Radar Systems
• Smart Munitions

Procurement Notes

Verify that the specific ordering suffix matches the required package type and tape-and-reel configuration. Confirm the 'EP' designation aligns with project requirements for controlled baseline, single fabrication site, and extended product life cycle. Ensure environmental specifications meet the intended operational temperature constraints.

Selection Notes

Select this component when high accuracy and wide dynamic range are critical for current monitoring applications. The 50 V/V gain option balances sensitivity with output swing limitations. Consider the extended temperature rating and robust packaging if the deployment environment involves harsh conditions or requires long-term reliability assurance.

Part Context

This part belongs to the INA190-EP family of current sense amplifiers designed for defense, aerospace, and medical sectors. The EP series distinguishes itself through controlled manufacturing processes, ensuring traceability and stability. It complements standard commercial variants by offering extended lifecycle support and specialized environmental hardening.

Replacement Considerations

Standard INA190 devices lack the enhanced product controls and extended temperature ratings. Verify compatibility with existing PCB layouts, as package dimensions may differ between commercial and EP versions.