Texas Instruments INA186A4IDCKT

Overview

INA186A4IDCKT from Texas Instruments is a bidirectional, zero-drift current-sense amplifier with 200 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 measurement in battery-powered consumer electronics such as smartphones and notebook PCs using SC70-6 packaging with REF and ENABLE pins.

For engineers reviewing the INA186A4IDCKT datasheet, INA186A4IDCKT pinout, INA186A4IDCKT application, or INA186A4IDCKT equivalent, this page delivers verified specifications, SC70 package terminal mapping, bidirectional sensing design guidance, and validated alternative options for portable power monitoring systems requiring low IQ, wide V_CM, and rail-to-rail output swing.

Technical Context

The INA186A4IDCKT 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 its 1.7–5.5 V supply. Its zero-drift topology maintains ±0.5 µV/°C max offset drift and supports unidirectional or bidirectional sensing via externally applied REF voltage (0 V to V_S).

With 33 kHz small-signal bandwidth at 200 V/V gain and 0.3 V/µs slew rate, it delivers fast step response (<30 µs to 1%) while consuming only 48 µA typical supply current. The ENABLE pin reduces quiescent current to 10 nA in shutdown, placing OUT in high-impedance state without external pull-down.

Key Specifications

Pinout & Package

INA186A4IDCKT is housed in a 6-pin SC70 package (2.00 mm × 1.25 mm body), compatible with automated SMT assembly and 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 INA186A4IDCKT, INA219BIDR trades analog simplicity for digital integration and reduced component count, while MAX40086AUT+T offers higher CMRR but sacrifices bidirectional operation and ultra-low IQ - making INA186A4IDCKT optimal for battery-constrained bidirectional sensing.

Availability

INA186A4IDCKT is available at Aetrix Electronics and suitable for smartphone battery charging, notebook PC power management, and wireless charger current monitoring requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for INA186A4IDCKT 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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal conditioning and power management ICs.

The INA186 product line was designed specifically for high-accuracy, low-power current sensing in portable and infrastructure power systems - emphasizing wide V_CM, zero-drift stability, and flexible bidirectional operation in miniature packages.

FAQ

What is the maximum common-mode voltage supported by the INA186A4IDCKT?

The INA186A4IDCKT supports a common-mode input voltage range from –0.2 V to +40 V, independent of its 1.7–5.5 V supply voltage. This allows reliable high-side sensing on 36-V rails and low-side sensing near ground without level-shifting circuitry. The specification is guaranteed across the full –40°C to +125°C operating temperature range per TI SBOS318B.

Does the INA186A4IDCKT support bidirectional current sensing?

Yes, the INA186A4IDCKT supports bidirectional current sensing via its dedicated REF pin (Pin 1), which accepts an external bias voltage between 0 V and V_S. When V_REF = V_S/2, positive differential input produces output > V_REF, and negative differential input produces output < V_REF. This capability is confirmed in the DCK package per Table 5-1 and Figure 7-3 of the INA186 datasheet.

What is the typical quiescent current of the INA186A4IDCKT, and how does the ENABLE pin affect it?

The INA186A4IDCKT draws 48 µA typical quiescent current when enabled and 10 nA typical when disabled via the ENABLE pin. In shutdown, the output enters high-impedance state and supply current drops by >4 orders of magnitude - a key enabler for battery-operated devices requiring periodic current sampling. ENABLE logic thresholds are defined in Section 6.5 of the datasheet.

Can the INA186A4IDCKT be used with a 1.8-V supply?

Yes, the INA186A4IDCKT operates from 1.7 V to 5.5 V, making 1.8-V supply fully supported. At 1.8 V, it maintains rail-to-rail output swing (GND +1 mV to V_S – 40 mV), 33 kHz bandwidth, and ±50 µV max offset - enabling high-resolution current measurement in modern ultra-low-voltage portable systems without performance compromise.

What package type is used for the INA186A4IDCKT, and what are its key mechanical dimensions?

The INA186A4IDCKT uses the SC70-6 package (TI package code DCK) with nominal body dimensions of 2.00 mm × 1.25 mm and 0.95 mm maximum height. It features gull-wing leads optimized for reflow soldering and IPC Class 3 assembly, and is listed in Table 3-1 of the datasheet as one of three qualified packages alongside SOT-23-THIN and DSBGA.