Texas Instruments INA210AIDCKJ

Overview

INA210AIDCKJ from Texas Instruments is a zero-drift, voltage-output current-shunt monitor optimized for bidirectional high- or low-side sensing in power management systems. It features 200 V/V fixed gain, ±35 µV max offset voltage, –0.3 V to 26 V common-mode input range, and operates from 2.7 V to 26 V supply. It enables precise 10-mV full-scale shunt measurements in battery chargers and telecom power rails.

For engineers reviewing the INA210AIDCKJ datasheet, INA210AIDCKJ pinout, INA210AIDCKJ application, or INA210AIDCKJ equivalent, this page delivers verified specifications, SC70-6 package layout, real-world use cases in notebook power monitoring and overcurrent protection, and validated alternative parts with documented functional differences.

Technical Context

The INA210AIDCKJ implements a zero-drift chopper-stabilized amplifier architecture to achieve ±35 µV max input offset and 0.5 µV/°C max drift over –40°C to +125°C. Its differential input stage supports true bidirectional current sensing across shunts at common-mode voltages up to 26 V - independent of its 2.7–26 V supply rail.

It uses internal precision resistor networks (R3 = 5 kΩ, R4 = 1 MΩ) to set its 200 V/V gain and provides a buffered voltage output referenced to an externally applied REF pin. The SC70-6 package integrates all six terminals without NC pins, enabling compact placement near shunt resistors for minimal parasitic error.

Key Specifications

Pinout & Package

The INA210AIDCKJ is housed in a 6-pin SC70 package (2.00 mm × 1.25 mm body), optimized for space-constrained PCB layouts near shunt resistors. All pins are functional; no NC terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA210AIDCKJ, the INA210AIDRJR offers identical functionality in a thermally superior package, while the INA240A1DRCR trades common-mode range and supply flexibility for enhanced speed and precision in narrow-voltage domains.

Availability

INA210AIDCKJ is available at Aetrix Electronics and suitable for notebook computers, telecom equipment, and battery chargers requiring stable component supply with guaranteed long-term sourcing.

Supply support for INA210AIDCKJ 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 INA21x product line was designed specifically for high-accuracy, low-power current sensing in space- and energy-constrained applications - targeting portable electronics, telecom infrastructure, and industrial power systems.

FAQ

What is the maximum common-mode voltage the INA210AIDCKJ can measure?

The INA210AIDCKJ supports a common-mode input voltage range of –0.3 V to 26 V across its IN+ and IN– pins. This allows it to perform high-side sensing on 24-V industrial rails and tolerate negative transients during switching events - all while powered from as low as 2.7 V. The specification is guaranteed over the full –40°C to +125°C temperature range.

Does the INA210AIDCKJ require external resistors to set gain?

No. The INA210AIDCKJ has a factory-trimmed fixed gain of 200 V/V achieved via internal laser-trimmed thin-film resistors (R3 = 5 kΩ, R4 = 1 MΩ). No external gain-setting components are needed - simplifying layout, reducing BOM count, and ensuring consistent performance across units and temperature.

Can the INA210AIDCKJ be used for bidirectional current sensing?

Yes. The INA210AIDCKJ is explicitly designed for bidirectional sensing: when current flows from IN+ to IN–, the output rises above the REF voltage; when current reverses, the output falls below REF. With REF biased at mid-supply (e.g., 2.5 V), the output spans ± full-scale - enabling charge/discharge detection in battery systems.

What is the purpose of the REF pin on the INA210AIDCKJ?

The REF pin sets the output voltage's common-mode level. When REF = 0 V, the output swings from ~0 V to (V+) – 0.05 V. When REF = V+/2, the output centers at V+/2 and swings symmetrically - essential for bidirectional operation. Because REF has no internal buffer, it must be driven by a low-impedance source or op-amp to preserve CMRR.

How does the zero-drift architecture improve accuracy in the INA210AIDCKJ?

The zero-drift chopper-stabilized design in the INA210AIDCKJ cancels input offset voltage and its drift over temperature - achieving ±35 µV max offset and ≤0.5 µV/°C drift from –40°C to +125°C. This enables reliable 10-mV full-scale shunt measurements without calibration, even in thermally unstable environments like enclosed power supplies.