Texas Instruments INA186A2IDCKT

Overview

INA186A2IDCKT from Texas Instruments is a bidirectional, zero-drift current-sense amplifier with 50 V/V fixed gain, –0.2 V to +40 V common-mode input range, ±50 µV max offset voltage, and 48 µA typical quiescent current. It enables precision microamp-level current monitoring in high-side or low-side configurations for battery-powered portable electronics.

For engineers reviewing the INA186A2IDCKT datasheet, INA186A2IDCKT pinout, INA186A2IDCKT application, or INA186A2IDCKT equivalent, key selection considerations include its SC70-6 package with REF/ENABLE support, bidirectional sensing capability via external reference biasing, rail-to-rail output swing (GND +1 mV / VS –40 mV), and guaranteed performance across –40°C to +125°C.

Technical Context

The INA186A2IDCKT uses a capacitively coupled front-end architecture to achieve 120 dB minimum CMRR and reject DC common-mode shifts up to ±40 V independent of 1.7–5.5 V supply. Its zero-drift design maintains ±0.5 µV/°C max offset drift and ±1% max gain error over temperature.

It integrates an enable-controlled shutdown mode reducing supply current to 10 nA, while retaining fast 30 µs settling time and 37 kHz small-signal bandwidth at 50 V/V gain. The REF pin (present in DCK package) allows bidirectional current detection by offsetting the output baseline between GND and VS.

Key Specifications

Pinout & Package

INA186A2IDCKT is housed in a 6-pin SC70 package (2.00 mm × 1.25 mm body size) with wettable flanks, optimized for space-constrained portable PCBs. Pin functions are validated per TI SBOS318B Rev B (July 2021).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current-sense amplifier applications.

Compared with INA2181A2IDCKT and MAX40056AUB+T, the INA186A2IDCKT uniquely balances bidirectional capability, ultra-low drift (0.5 µV/°C), and minimal 48-µA operating current in the smallest SC70 footprint - making it optimal for space- and power-constrained portable systems requiring full-direction current telemetry.

Availability

INA186A2IDCKT is available at Aetrix Electronics and suitable for smartphone battery monitoring, USB-C power delivery, and notebook PC power management requiring stable component supply across extended product lifecycles.

Supply support for INA186A2IDCKT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in precision signal chain and power management ICs.

The INA186 family was designed specifically for ultra-low-power, high-accuracy bidirectional current sensing in portable and battery-operated systems - emphasizing microamp-level measurement fidelity, wide common-mode tolerance, and minimal supply current.

FAQ

What is the maximum common-mode voltage the INA186A2IDCKT can handle?

The INA186A2IDCKT supports a common-mode input voltage range of –0.2 V to +40 V, independent of its 1.7–5.5 V supply voltage. This allows high-side sensing on 36-V bus rails while operating from a 1.8-V MCU supply. The specification is guaranteed across –40°C to +125°C and validated per TI SBOS318B Rev B absolute maximum ratings.

Does the INA186A2IDCKT support bidirectional current sensing?

Yes, the INA186A2IDCKT supports bidirectional current sensing via its dedicated REF pin (present in the DCK SC70 package). Applying a mid-supply voltage (e.g., VS/2) to REF centers the output at that voltage, allowing positive differential inputs to raise OUT above REF and negative inputs to lower OUT below REF - enabling precise charge/discharge current detection in battery applications.

What is the typical quiescent current of the INA186A2IDCKT, and how does it change in shutdown mode?

The INA186A2IDCKT draws 48 µA typical quiescent current during normal operation. When the ENABLE pin is driven to GND, it enters shutdown mode and reduces supply current to 10 nA typical - a 4,800× reduction. This feature is critical for battery-powered devices requiring periodic current sampling without continuous power drain.

Can the INA186A2IDCKT be used with a 1.8-V supply?

Yes, the INA186A2IDCKT operates from 1.7 V to 5.5 V, fully specified at 1.8 V. At this voltage, it delivers rail-to-rail output swing (GND +1 mV / VS –40 mV), 37 kHz bandwidth, and maintains ±50 µV max offset - making it compatible with modern ultra-low-voltage MCUs and ADCs in wearables and hearables.

What package type is used for the INA186A2IDCKT, and does it support solder reflow inspection?

INA186A2IDCKT uses the SC70-6 (DCK) package with 2.00 mm × 1.25 mm body size and wettable flank leads. The flank geometry enables automated optical inspection (AOI) of solder joints after reflow, improving manufacturing yield in high-density portable PCB assemblies.