Texas Instruments INA214AIDCKRG4

Overview

INA214AIDCKRG4 from Texas Instruments is a voltage-output, bidirectional current-shunt monitor with zero-drift architecture, designed for high-accuracy low- or high-side current sensing in power rails up to 26 V. It features 100 V/V fixed gain, ±60 µV maximum input offset voltage (RTI), 0.5 µV/°C max offset drift, 10 ppm/°C max gain drift, and operates from 2.7 V to 26 V supply with ≤100 µA quiescent current. It enables precise measurement of shunt voltage drops as low as 10 mV full-scale in battery chargers and telecom power management systems.

For engineers reviewing the INA214AIDCKRG4 datasheet, INA214AIDCKRG4 pinout, INA214AIDCKRG4 application, or INA214AIDCKRG4 equivalent, this page delivers verified technical context, package-specific pin functions, real-world application mappings, and validated alternative options - all grounded in TI's SBOS437K production data sheet and official device specifications.

Technical Context

The INA214AIDCKRG4 implements a zero-drift chopper-stabilized amplifier topology to achieve ultra-low offset and drift, enabling accurate current sensing at sub-100-mV shunt drops. Its differential input stage supports common-mode voltages from –0.3 V to 26 V independent of supply voltage, making it suitable for both low-side and high-side configurations across wide-rail systems.

It integrates matched internal resistive feedback networks (R_INT = 10 kΩ) to set its fixed 100 V/V gain, with CMRR ≥105 dB over –40°C to +125°C. The SC70-6 package supports compact layout while maintaining thermal resistance of 227.3°C/W (Junction-to-Ambient), and the REF pin allows flexible output referencing from 0 V to V_S.

Key Specifications

Pinout & Package

INA214AIDCKRG4 is packaged in a 6-pin SC70 (DCK) package with nominal body size 2.00 mm × 1.25 mm. Pin functions are validated per TI SBOS437K Figure 4-1 and Table 4-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA214AIDCKR, the G4 variant adds no performance change but ensures environmental compliance; compared with INA213AIDCKR, the INA214AIDCKRG4 provides double gain and tighter offset for low-drop, high-accuracy use cases - critical in battery and USB-PD applications.

Availability

INA214AIDCKRG4 is available at Aetrix Electronics and suitable for power management systems, battery charging circuits, and telecom equipment requiring stable component supply with guaranteed long-term manufacturability and traceable sourcing.

Supply support for INA214AIDCKRG4 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 amplifiers, power management, and signal chain solutions.

The INA21x family was developed specifically for high-accuracy, low-power current sensing in space- and energy-constrained systems - targeting notebook, telecom, and industrial power applications demanding rail-to-rail common-mode operation and zero-drift stability.

FAQ

What is the maximum common-mode voltage supported by the INA214AIDCKRG4?

The INA214AIDCKRG4 supports a common-mode input voltage range of –0.3 V to 26 V across its IN+ and IN– pins, independent of supply voltage. This specification is guaranteed over the full operating temperature range (–40°C to +125°C) and enables reliable high-side sensing on 24-V industrial rails. Transient voltages above 26 V require external Zener clamping per TI's Section 6.4.4 guidance.

Does the INA214AIDCKRG4 have a shutdown pin?

No, the INA214AIDCKRG4 does not include a dedicated shutdown pin. However, its ultra-low quiescent current (≤100 µA) allows system-level power gating via the V+ supply line using an external MOSFET or logic-controlled switch. TI recommends ensuring clean turn-on/turn-off sequencing and accounting for residual 1-MΩ input-to-REF/OUT paths during shutdown, as detailed in Section 6.4.2 of the SBOS437K datasheet.

What is the purpose of the REF pin on the INA214AIDCKRG4?

The REF pin on the INA214AIDCKRG4 sets the output common-mode voltage level and must be driven by a low-impedance source between 0 V and V+. When tied to mid-supply (e.g., V+/2), it centers the output swing; when grounded, it enables single-supply unipolar output. External impedance on REF degrades CMRR, so TI advises buffering with an op amp if sourced from a resistive divider - as explained in Section 6.4.3.

Can the INA214AIDCKRG4 be used for bidirectional current sensing?

Yes, the INA214AIDCKRG4 supports true bidirectional current sensing. Its differential input architecture produces positive output voltage for current flowing from IN+ to IN− (e.g., high-side sourcing) and negative output voltage when current reverses direction - provided the REF pin is set to a mid-rail voltage and the output stage has sufficient headroom. This capability is confirmed in TI's Description section and Figure 6-1 typical application.

What package type and pin count does the INA214AIDCKRG4 use?

The INA214AIDCKRG4 uses the SC70-6 (DCK) package: a 6-pin, surface-mount, plastic thin shrink small-outline package with nominal dimensions of 2.00 mm × 1.25 mm. Pinout is validated per TI SBOS437K Figure 4-1 and includes V+, IN−, IN+, REF, GND, and OUT - with no NC pins. Thermal resistance is 227.3°C/W (Junction-to-Ambient).