INA186A1IYFDR

Overview

The INA186A1IYFDR is a bidirectional, low-power, zero-drift current-sense amplifier manufactured by Texas Instruments. It operates on a single supply voltage ranging from 1.7 V to 5.5 V with a typical quiescent current of 48 µA. The device features a fixed gain of 25 V/V and supports common-mode voltages from -0.2 V to +40 V. Key electrical specifications include a maximum offset voltage of ±50 µV, a minimum common-mode rejection ratio of 120 dB, and an input bias current of 3 nA maximum. It is housed in a DSBGA-6 package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Capacitively coupled front-end architecture provides high common-mode rejection and low input bias current for accurate microamp-level measurements.
• Zero-drift design minimizes offset voltage and drift, extending the dynamic range for precise current sensing across varying temperatures.
• Integrated enable pin allows the device to enter a low-power shutdown state with reduced supply current when not in use.

Applications

• Standard notebook PC
• Smartphone
• Consumer battery charger

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 official documentation. Confirm that the component meets all RoHS compliance requirements specified for this part number before finalizing procurement orders.

Selection Notes

Select the INA186A1 variant specifically when a fixed gain of 25 V/V is required for the application circuit. Ensure the system design accommodates the DSBGA-6 package dimensions and thermal characteristics. Verify that the unidirectional configuration aligns with the internal grounding of the REF pin in this specific package option.

Part Context

This component belongs to the INA186 family of current-sense amplifiers designed for high-accuracy, low-power applications. Unlike other members of the series that may offer different gain options or packages like SC70, the A1 designation specifies the 25 V/V gain level, while the YFD suffix indicates the compact DSBGA form factor suitable for space-constrained designs.

Replacement Considerations

Direct replacements within the same family include INA186A2IYFDR (50 V/V), INA186A3IYFDR (100 V/V), INA186A4IYFDR (200 V/V), and INA186A5IYFDR (500 V/V). These parts share identical pinouts and package styles but differ in fixed gain values.