INA186A4IYFDR

Overview

The INA186A4IYFDR is a bidirectional, low-power, zero-drift current-sense amplifier manufactured by Texas Instruments. It features a fixed gain of 200 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. Key electrical specifications include a typical quiescent current of 48 µA, an input bias current of 500 pA, and a minimum common-mode rejection ratio of 120 dB. It is housed in a DSBGA-6 package.

Feature Summary

• Zero-drift architecture ensures high precision with low offset voltage and drift for accurate microamp-level measurements.
• Bidirectional sensing capability allows monitoring of current flow in both directions using the REF pin.
• Low input bias current enables the use of larger sense resistors and input filters without accuracy loss.
• Integrated enable pin reduces supply current to less than 0.1 µA when disabled.

Applications

• Standard notebook PC
• Smartphone
• Consumer battery charger
• Baseband unit (BBU)
• Merchant network and server PSU

Procurement Notes

Verify the specific ordering suffix IYFDR corresponds to the DSBGA-6 package and tape-and-reel delivery format as defined in the manufacturer's documentation. Confirm that the A4 variant provides the required 200 V/V gain for the target application circuit design. Ensure compatibility with the intended operating temperature range of -40°C to +125°C.

Selection Notes

Select this component when bidirectional current monitoring is required alongside ultra-low power consumption. The 200 V/V gain is suitable for detecting small voltage drops across shunt resistors. Consider the DSBGA package size constraints and the necessity of the ENABLE pin for power management strategies in portable or battery-operated systems.

Part Context

This part belongs to the INA186 family of current-sense amplifiers designed for high-accuracy applications. Unlike unidirectional variants, the A4 model includes a REF pin for bidirectional operation. It shares the zero-drift technology and low-bias characteristics of the series but is distinguished by its specific gain setting and package configuration.

Replacement Considerations

INA186A4IDCKR

FAQ

Does the INA186A4IYFDR support bidirectional current sensing?

Yes, the YFD package includes a REF pin that allows for bidirectional current monitoring by applying an external reference voltage.

What is the maximum common-mode voltage supported?

The device supports a common-mode voltage range from -0.2 V to +40 V, independent of the supply voltage.