INA190A4IDCKT

Overview

The INA190A4IDCKT is a bidirectional current sense amplifier from Texas Instruments, housed in a 6-SC70 package. It operates with a supply voltage range of 1.7 V to 5.5 V and supports common-mode voltages from -200 mV to 40 V. The device features a fixed gain of 200 V/V, an input bias current of 500 pA, and an input offset voltage of -3 µV. Key electrical parameters include a gain error of -0.06%, a gain-bandwidth product of 33 kHz, and a CMRR of 150 dB. It functions within a temperature range of -40°C to +125°C.

Feature Summary

• Bidirectional sensing capability for accurate current measurement in both directions.
• Ultra-low input bias current enabling high-precision measurements with minimal loading effects.
• High common-mode rejection ratio ensuring signal integrity under varying common-mode conditions.

Applications

• Battery management systems
• Load switch control circuits
• Overcurrent protection designs

Procurement Notes

Verify the specific suffix IDCKT confirms the SC70-6 package and tape-and-reel orientation. Confirm the A4 grade designation matches the required 200 V/V gain specification. Check for moisture sensitivity level requirements during storage and handling. Ensure the component status aligns with long-term availability needs as lifecycle data may vary by region.

Selection Notes

Select this part when bidirectional monitoring is required alongside a 200 V/V gain factor. The SC70-6 package suits space-constrained surface-mount layouts. Verify that the 40 V common-mode voltage range covers the maximum system rail potential. Consider the 150 dB CMRR for noise-sensitive environments where signal accuracy is critical.

Part Context

This component belongs to the INA190 series of ultraprecise current sense amplifiers. The series emphasizes low offset voltage and picoampere-level input bias currents. The A4 variant specifically provides a 200 V/V gain option within the family's configurable architecture.

Replacement Considerations

INA190A4IDCKR shares identical electrical specifications but differs in packaging format (reel vs. cut tape). Other INA190 variants offer different gains such as 50 V/V or 100 V/V.