Texas Instruments INA213AIDCKRG4

Overview

INA213AIDCKRG4 from Texas Instruments is a voltage-output, zero-drift current-shunt monitor optimized for bidirectional, low- or high-side current sensing in power management systems. It features 50 V/V fixed gain, ±100 µV max input offset voltage (RTI), 80 kHz bandwidth, –0.3 V to 26 V common-mode input range, and operates from 2.7 V to 26 V supply with ≤100 µA quiescent current. It enables precision 10-mV full-scale shunt measurements in battery chargers and telecom power rails.

For engineers reviewing the INA213AIDCKRG4 datasheet, INA213AIDCKRG4 pinout, INA213AIDCKRG4 application, or INA213AIDCKRG4 equivalent, this page delivers verified specifications, SC70-6 package layout, real-world use cases in notebook power monitoring and USB-C PD systems, and validated alternative options for design flexibility and supply continuity.

Technical Context

The INA213AIDCKRG4 implements a zero-drift chopper-stabilized amplifier architecture to achieve ±100 µV max RTI offset and 0.5 µV/°C max drift over –40°C to +125°C, enabling accurate low-voltage shunt sensing. Its differential input stage supports true bidirectional current measurement across shunts placed on either side of the load.

With 50 V/V fixed gain and 80 kHz small-signal bandwidth, it delivers fast response to load transients while maintaining >100 dB CMRR at DC and >80 dB at 10 kHz. The REF pin allows output level shifting, supporting single-supply ADC interfacing without level-shifting circuitry.

Key Specifications

Pinout & Package

INA213AIDCKRG4 is packaged in a 6-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained PCB layouts in portable electronics and modular power bricks.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA213AIDCKRG4, INA213AIDCKR offers identical performance but differs only in packaging compliance and reel orientation, while INA214AIDCKR provides double the gain at the cost of 62% bandwidth reduction-making it optimal for static or slow-varying current monitoring rather than dynamic load profiling.

Availability

INA213AIDCKRG4 is available at Aetrix Electronics and suitable for notebook power management, USB-C PD implementation, and telecom rectifier monitoring requiring stable component supply across long production cycles and multi-source procurement strategies.

Supply support for INA213AIDCKRG4 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 series was designed specifically for high-accuracy, low-power current sensing in space- and energy-constrained applications-including portable computing, telecom infrastructure, and industrial power systems-leveraging zero-drift architecture to eliminate thermal drift errors.

FAQ

What is the maximum common-mode voltage the INA213AIDCKRG4 can measure?

The INA213AIDCKRG4 supports a common-mode input voltage range of –0.3 V to 26 V, enabling high-side sensing on 24-V industrial buses and compatibility with negative-ground battery discharge paths. This specification holds across the full operating temperature range (–40°C to +125°C) and is independent of supply voltage, allowing operation from 2.7 V while monitoring 26-V rails.

Does the INA213AIDCKRG4 support bidirectional current sensing?

Yes, the INA213AIDCKRG4 supports true bidirectional current sensing. Its output voltage swings above and below the REF pin voltage depending on current direction: positive differential input (IN+ > IN−) raises OUT relative to REF; negative differential input lowers OUT. With REF tied to mid-supply (e.g., 1.65 V on 3.3-V rail), the output indicates charge (+) or discharge (–) polarity unambiguously.

What is the purpose of the REF pin on the INA213AIDCKRG4?

The REF pin on the INA213AIDCKRG4 sets the output common-mode voltage baseline. It accepts any DC voltage from GND to V+, allowing output level shifting-for example, tying REF to GND yields 0–3 V output on a 3.3-V supply, while tying it to 1.65 V enables bipolar output swing for bidirectional sensing. This eliminates external level-shifting circuitry when interfacing with single-supply ADCs.

Can the INA213AIDCKRG4 operate from a 3.3-V supply while monitoring a 24-V rail?

Yes, the INA213AIDCKRG4 can operate from a 3.3-V supply while accurately measuring current on a 24-V rail. Its –0.3 V to 26 V common-mode input range is fully independent of supply voltage. The device draws only ≤100 µA, so no level-shifting or isolated supply is needed-simplifying design and reducing bill-of-materials cost in multi-rail systems.

What package type does the INA213AIDCKRG4 use, and is it RoHS-compliant?

The INA213AIDCKRG4 uses the 6-pin SC70 (DCK) package, measuring 2.00 mm × 1.25 mm. The "G4" suffix explicitly denotes TI's green, lead-free, RoHS-6 compliant packaging with matte-tin finish and standard tape-and-reel delivery. It meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and is compatible with standard SMT reflow profiles.