Texas Instruments INA210BIDCKT

Overview

INA210BIDCKT from Texas Instruments is a zero-drift, voltage-output current-shunt monitor optimized for bidirectional high- or low-side sensing in power rails up to 26 V. It features 200 V/V fixed gain, ±35 µV max offset voltage, 0.5 µV/°C max offset drift, and operates from 2.7 V to 26 V supply with 100 µA max quiescent current. It enables precise 10-mV full-scale shunt measurements in battery chargers and telecom power management systems.

For engineers reviewing the INA210BIDCKT datasheet, INA210BIDCKT pinout, INA210BIDCKT application, or INA210BIDCKT equivalent, this page delivers verified specifications, SC70-6 package details, functional pin roles, real-world use cases in power monitoring, and validated alternative parts for design flexibility and supply continuity.

Technical Context

The INA210BIDCKT implements a precision zero-drift chopper-stabilized amplifier architecture to achieve ultra-low input offset and near-zero thermal drift. Its differential input stage supports common-mode voltages from –0.3 V to 26 V independent of supply voltage, enabling direct sensing on high-voltage rails while powered from low-voltage supplies.

It uses internal matched thin-film resistors (R3 = R4 = 5 kΩ) to set its 200 V/V gain and provides a buffered voltage output referenced to an externally applied REF pin. The device lacks a shutdown pin but achieves low-power operation via its 100 µA max IQ and supports stable operation with 0.01–0.1 µF bypass capacitance at V+.

Key Specifications

Pinout & Package

INA210BIDCKT is packaged in a 6-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained PCB layouts in portable and telecom equipment.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA210AIDCKT, the INA210BIDCKT offers tighter ±0.5% gain error for high-accuracy closed-loop systems, while INA240A1IDR trades precision and power for extended voltage range and robustness-making it unsuitable as a drop-in replacement but viable for upgraded reliability requirements.

Availability

INA210BIDCKT is available at Aetrix Electronics and suitable for power supply monitoring, battery charging control, notebook system power rail analysis, and industrial motor drive feedback requiring stable component supply and long-term production support.

Supply support for INA210BIDCKT 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-drift current sensing in space- and power-constrained applications across computing, telecom, and industrial markets-emphasizing zero-drift stability, wide common-mode operation, and SC70 packaging.

FAQ

What is the maximum common-mode voltage supported by the INA210BIDCKT?

The INA210BIDCKT supports a common-mode input voltage range of –0.3 V to 26 V across its –40°C to +125°C operating temperature range. This specification applies to Version B devices per the official TI SBOS437K datasheet, enabling reliable high-side sensing on 24-V industrial buses while powered from a 3.3-V supply. Exceeding 26 V requires external transient protection circuitry.

Does the INA210BIDCKT require external calibration for precision current measurement?

No, the INA210BIDCKT does not require external calibration for most precision applications due to its zero-drift architecture, ±35 µV max offset voltage, and ±0.5% max gain error over temperature. Its 0.5 µV/°C offset drift and 10 ppm/°C gain drift ensure stable performance across –40°C to +125°C, making it suitable for uncalibrated systems like battery fuel gauging and power supply health monitoring where INA210BIDCKT delivers consistent accuracy.

Can the INA210BIDCKT be used in bidirectional current sensing configurations?

Yes, the INA210BIDCKT supports bidirectional current sensing by interpreting the polarity of the differential input voltage (V_IN+ − V_IN−). When current flows from IN+ to IN−, the output rises above V_REF; reverse current pulls output below V_REF. This behavior is inherent to its differential amplifier topology and is explicitly confirmed in the INA21x family description, allowing INA210BIDCKT to monitor charge/discharge cycles in battery systems without hardware modification.

What is the recommended bypass capacitance for the V+ pin of the INA210BIDCKT?

Texas Instruments specifies a bypass capacitance of 0.01 µF to 0.1 µF (10 nF to 100 nF) ceramic capacitor placed as close as possible to the V+ pin of the INA210BIDCKT. This range ensures stable operation across all supply voltages (2.7 V to 26 V) and suppresses high-frequency noise that could modulate the zero-drift amplifier. Larger values may be added in parallel for noisy supplies, but the primary 0.01–0.1 µF cap must remain local to the DCK package.

How does the REF pin function in the INA210BIDCKT, and what happens if it is left unconnected?

The REF pin sets the output voltage common-mode level: V_OUT = 200 × (V_IN+ − V_IN−) + V_REF. If left floating, the INA210BIDCKT output becomes unpredictable due to internal node instability and potential latch-up. TI mandates connecting REF to a stable voltage between 0 V and V+, typically GND (for single-supply unipolar output) or mid-supply (for bipolar swing). Leaving REF unconnected violates absolute maximum ratings and risks permanent damage to INA210BIDCKT.