Texas Instruments INA210CIDCKR

Overview

INA210CIDCKR 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, 0.5 µV/°C max offset drift, –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 INA210CIDCKR datasheet, INA210CIDCKR pinout, INA210CIDCKR application, or INA210CIDCKR equivalent, this page delivers verified technical context, package-specific pin functions, real-world use cases, and validated alternative options - all grounded in TI's SBOS437K production data sheet and orderable part specifications.

Technical Context

The INA210CIDCKR implements a precision zero-drift chopper-stabilized amplifier architecture to achieve ultra-low input offset and near-zero thermal drift. Its differential input stage rejects common-mode voltages up to 26 V independent of supply voltage, enabling direct sensing on high-voltage rails while powered from low-voltage logic supplies.

It integrates matched internal resistors (R3 = R4 = 5 kΩ) forming a fixed-gain difference amplifier with reference input (REF) for output level shifting. The SC70-6 package supports compact layout with minimal parasitic inductance at IN+ and IN–, critical for maintaining CMRR >105 dB across –40°C to +125°C.

Key Specifications

Pinout & Package

INA210CIDCKR is packaged in a 6-pin SC70 (DCK) with 2.00 mm × 1.25 mm body size and 0.65-mm lead pitch. This thermally enhanced, surface-mount package supports high-density PCB layouts and meets JEDEC MO-220 standards.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA210CIDCKR, INA213AIDCKR trades gain for extended dynamic range and bandwidth, while MAX4080TASA+ sacrifices offset performance for speed and integrated reference - making INA210CIDCKR optimal for precision, low-power, wide common-mode DC monitoring where stability and low drift dominate design requirements.

Availability

INA210CIDCKR is available at Aetrix Electronics and suitable for power supply monitoring, battery management systems, notebook power delivery, and industrial motor control requiring stable component supply across automotive, telecom, and industrial OEM programs.

Supply support for INA210CIDCKR 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 and embedded processing solutions, with over 50 years of innovation in precision signal conditioning and power management ICs.

The INA21x family was designed specifically for high-accuracy, low-drift current sensing in space- and power-constrained applications - targeting battery-powered devices, server PSUs, and industrial automation where measurement integrity directly impacts system reliability and efficiency.

FAQ

What is the maximum common-mode voltage the INA210CIDCKR can handle?

The INA210CIDCKR 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 C devices like INA210CIDCKR and enables reliable high-side sensing on 24-V industrial buses or negative-rail monitoring without external level-shifting circuitry. The device maintains specified accuracy even when V_CM exceeds the V₊ supply voltage, a key advantage over standard op-amps.

Does the INA210CIDCKR require external calibration for precision current measurement?

No, the INA210CIDCKR does not require external calibration for most precision applications due to its zero-drift architecture, which limits initial offset to ±35 µV and drift to 0.5 µV/°C. With a 100-mΩ shunt, this translates to <±0.35 mA absolute error at room temperature and <±0.5 mA over –40°C to +125°C - sufficient for Class 1.0 energy metering and battery fuel gauging without factory trim. System-level calibration remains optional for sub-0.1% accuracy targets.

Can the INA210CIDCKR be used in bidirectional current sensing configurations?

Yes, the INA210CIDCKR supports true bidirectional current sensing by configuring the REF pin to a mid-supply voltage (e.g., V₊/2). When current flows in either direction across the shunt, the output swings symmetrically above and below REF - producing a ratiometric output that preserves polarity information. This capability is explicitly validated in TI's SBOS437K datasheet Figure 7-3 and is widely deployed in lithium-ion BMS for charge/discharge state-of-charge tracking.

What is the recommended bypass capacitor for the V+ pin of the INA210CIDCKR?

Texas Instruments specifies a 0.1-µF ceramic capacitor (X7R or better) placed within 2 mm of the V+ pin and connected directly to the GND pin on the same side of the PCB. This minimizes high-frequency supply noise coupling into the amplifier core and prevents oscillation - especially critical given the INA210CIDCKR's 14-kHz bandwidth and sensitivity to layout-induced parasitics. A second 1-µF bulk capacitor may be added nearby for systems with noisy DC-DC sources.

Is the INA210CIDCKR pin-compatible with other members of the INA21x family?

No, the INA210CIDCKR is not pin-compatible with other INA21x variants (e.g., INA211, INA213) despite sharing the same SC70-6 package. While pin numbering and physical footprint match, internal gain-setting resistors differ per variant - meaning substituting an INA211CIDCKR (500 V/V) would scale output by 2.5× and invalidate system calibration. TI confirms pin compatibility only within identical gain versions (e.g., INA210AIDCKR ↔ INA210CIDCKR), not across the family.