INA190A5IDCKT

Overview

The INA190A5IDCKT is a bidirectional, ultra-precise current sense amplifier manufactured by Texas Instruments. It features a fixed gain of 500 V/V and operates with a supply voltage range of 1.7 V to 5.5 V. The device supports a common-mode voltage from -200 mV to 40 V and includes an enable pin for power management. Key electrical specifications include a maximum input bias current of 3 nA, an input offset voltage of 3 µV, and a gain error of 0.08%. It offers a gain-bandwidth product of 27 kHz and a minimum CMRR of 132 dB. The component is housed in a 6-pin SC-70 package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Ultra-low input bias current capability for high-precision sensing
• Integrated enable control for system power optimization
• Bidirectional operation supporting negative common-mode voltages

Applications

• Battery management systems requiring precise current monitoring
• Industrial process control loops with low-side or high-side sensing
• Overcurrent protection circuits in portable electronic devices

Procurement Notes

Verify the specific suffix IDCKT against official Texas Instruments documentation to confirm the SC-70-6 package and tape-and-reel shipping configuration. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration into the manufacturing process. Ensure the design accounts for the specified operating temperature range and supply voltage constraints.

Selection Notes

Select this component when picoamp-level input bias currents are critical for measurement accuracy. The fixed 500 V/V gain suits applications with small differential signals across the shunt resistor. The inclusion of an enable pin distinguishes it from standard variants, making it suitable for battery-powered designs requiring active power-down states.

Part Context

This part belongs to the INA190 family of zero-drift current sense amplifiers. Unlike other members of the series that may offer different gain options or lack the enable feature, the A5 variant specifically provides a 500 V/V gain. The IDCKT designation indicates the specific packaging and thermal characteristics defined by the manufacturer for surface-mount assembly.

Replacement Considerations

Direct substitutes within the same family include INA190A5IDCKR (reel packaging) or INA190A5IDDFR (SOT-23-8 package). Verify pinout compatibility and functional equivalence before substitution.