Texas Instruments INA210AIRSWT

Overview

INA210AIRSWT 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 maximum offset voltage, –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 precise 10-mV full-scale shunt measurements in battery chargers and telecom power rails.

For engineers reviewing the INA210AIRSWT datasheet, INA210AIRSWT pinout, INA210AIRSWT application, or INA210AIRSWT equivalent, this page delivers verified specifications, package mapping to the 10-pin Thin UQFN (RSW), functional pin roles, real-world use cases in power monitoring, and validated alternative options - all grounded in TI's SBOS437K datasheet and official product documentation.

Technical Context

The INA210AIRSWT implements a zero-drift chopper-stabilized amplifier architecture to achieve ±35 µV max offset and 0.5 µV/°C max drift over –40°C to +125°C. Its differential input stage supports common-mode voltages up to 26 V independent of supply, enabling direct sensing on 12-V or 24-V rails while powered from as low as 2.7 V.

It integrates matched thin-film resistors for 200 V/V gain accuracy (±0.5% max for Version C), delivers 14 kHz bandwidth at 10 pF load, and maintains CMRR ≥105 dB across temperature. The REF pin allows output level shifting, supporting single-supply ADC interfacing without level translation.

Key Specifications

Pinout & Package

INA210AIRSWT is packaged in a 10-pin Thin UQFN (RSW) measuring 1.80 mm × 1.40 mm with 0.5-mm pitch. This thermally enhanced, space-constrained package supports high-density PCB layouts and offers 107.3°C/W junction-to-ambient thermal resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA210AIDCKR, the INA210AIRSWT offers superior thermal performance and mechanical robustness in dense layouts; compared with INA240A1DR, it trades bandwidth and voltage range for lower offset, lower IQ, and smaller size - making it optimal for space- and power-constrained 12–24-V systems.

Availability

INA210AIRSWT is available at Aetrix Electronics and suitable for battery charger monitoring, telecom power shelf supervision, industrial PLC I/O modules, and laptop system power management requiring stable component supply and long-term production continuity.

Supply support for INA210AIRSWT 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

The INA21x family was designed specifically for high-accuracy, low-power current sensing in power management subsystems - emphasizing zero-drift stability, wide common-mode operation, and compact packaging for modern energy-efficient designs.

FAQ

What is the maximum common-mode voltage supported by the INA210AIRSWT?

The INA210AIRSWT supports a common-mode input voltage range of –0.3 V to 26 V across its full operating temperature range (–40°C to +125°C). This specification applies to Version A of the device, as confirmed in Section 5.5 of the SBOS437K datasheet. The 26-V upper limit enables direct high-side sensing on 24-V industrial and telecom rails without external level-shifting circuitry. For transient overvoltage conditions exceeding 26 V, TI recommends adding zener-based clamping per Section 6.4.4.

Does the INA210AIRSWT require external gain-setting resistors?

No, the INA210AIRSWT does not require external gain-setting resistors. It integrates precision thin-film resistors to deliver a fixed 200 V/V gain, as specified in Table 4-1 and Section 5.5 of the SBOS437K datasheet. This eliminates resistor matching errors, reduces PCB area, and improves temperature stability versus discrete resistor networks. The gain is factory-trimmed and remains within ±0.5% over temperature for Version C devices like INA210AIRSWT.

What is the purpose of the REF pin on the INA210AIRSWT?

The REF pin on the INA210AIRSWT sets the output voltage offset baseline. When driven with a DC voltage (e.g., V+/2), the output becomes V_OUT = 200 × (V_IN+ – V_IN−) + V_REF. This enables level-shifting for single-supply ADC interfacing, ratiometric measurements, or bipolar output configurations. As detailed in Figure 6-4 and Section 6.4.3 of the datasheet, proper REF termination - either directly to a low-impedance source or buffered - is essential to maintain CMRR >105 dB.

Can the INA210AIRSWT operate from a 3.3-V supply?

Yes, the INA210AIRSWT operates from 2.7 V to 26 V, so a 3.3-V supply is fully supported. At 3.3 V, the output swings from approximately 5 mV above GND to within 50 mV of V+, delivering usable dynamic range for 10-mV shunt drops. Quiescent current remains ≤100 µA, and all key specs - including offset, gain error, and CMRR - are guaranteed over temperature per Section 5.3 and 5.5 of SBOS437K. This makes INA210AIRSWT ideal for low-voltage portable and IoT applications.

How does the zero-drift architecture benefit shunt-based current sensing?

The zero-drift architecture in the INA210AIRSWT achieves ±35 µV maximum input offset and 0.5 µV/°C max drift, enabling accurate measurement of sub-10-mV shunt voltage drops. For example, with a 10-mΩ shunt, this translates to ±3.5-mA absolute error at 1-A load - far superior to conventional amplifiers with 100–500 µV offsets. This allows designers to reduce shunt power loss by 10× (e.g., 10 mW vs. 100 mW at 1 A), critical for thermal management and efficiency in battery-powered and high-density systems.