Texas Instruments INA216A4YFFR

Overview

INA216A4YFFR from Texas Instruments is a unidirectional, high-side current shunt monitor IC with 200V/V fixed gain, ±20μV max input offset voltage, ±0.2% max gain error, and operation from +1.8V to +5.5V common-mode input range. It enables precision low-voltage drop current sensing (e.g., 10mV full-scale) in battery-powered power management systems.

For engineers reviewing the INA216A4YFFR datasheet, INA216A4YFFR pinout, INA216A4YFFR application, or INA216A4YFFR equivalent, this page delivers verified specifications, WCSP-4 package details, real-world use cases in notebook power rails and telecom DC/DC monitoring, and validated alternative options for design flexibility.

Technical Context

The INA216A4YFFR uses zero-drift auto-zero architecture to achieve ±20μV max offset and 0.1μV/°C drift, enabling accurate sub-100mV shunt voltage measurement. Its 200V/V gain supports full-scale output at ≤2.5V with only 12.5mV differential input, ideal for ultra-low-loss current sensing.

Powered directly from the IN+ pin (no dedicated VDD), it operates across +1.8V to +5.5V common-mode range while drawing just 13μA quiescent current. The device features buffered voltage output, eliminating need for external op-amp buffering in most applications.

Key Specifications

Pinout & Package

INA216A4YFFR is housed in a 4-bump DSBGA (WCSP-4) package, 0.87mm × 0.87mm, 0.4mm pitch, marked "OZ" on top. Thermal resistance θJA = 160°C/W reflects compact size and board-level heat dissipation constraints.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current shunt monitor applications.

Compared with INA216A4YFFR, INA213A4YFFR trades precision for lower cost in non-critical monitoring, while MAX40056ATTB+ offers better offset but introduces supply complexity and compatibility constraints in standard single-rail systems.

Availability

INA216A4YFFR is available at Aetrix Electronics and suitable for battery fuel gauging, USB-C power delivery monitoring, telecom DC/DC converter OCP, and industrial PLC I/O module protection requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for INA216A4YFFR 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 INA216 series was designed specifically for ultra-low-power, high-accuracy unidirectional current sensing in space- and energy-constrained portable and telecom systems - emphasizing zero-drift performance in chip-scale packaging.

FAQ

What is the maximum common-mode voltage the INA216A4YFFR can handle?

The INA216A4YFFR supports a common-mode input range of +1.8V to +5.5V. Its absolute maximum rating is +7V on the IN+ pin, but operation beyond +5.5V violates specification and risks parametric shift or damage. For transients above +5.5V, external zener-based protection with series resistors (e.g., 10Ω) is required per TI application note SBOS503C Figure 22.

Does the INA216A4YFFR require an external power supply pin?

No - the INA216A4YFFR derives power directly from the IN+ pin, which serves as both high-side shunt connection and supply input. This eliminates the need for a dedicated VDD pin but constrains minimum common-mode voltage to +1.8V. No external regulator or decoupling capacitor is required at IN+, though local 100nF ceramic is recommended for noise immunity.

What is the output swing capability of the INA216A4YFFR?

The INA216A4YFFR output swings from GND +0.001V to V+ −0.1V under RL = 10kΩ to GND. At heavier loads (e.g., 2kΩ), swing degrades to GND +0.002V / V+ −0.3V. This rail-to-rail capability enables direct interface with 12-bit SAR ADCs operating on same supply, avoiding level-shifting or gain-stage overhead.

Can the INA216A4YFFR be used for bidirectional current sensing?

No - the INA216A4YFFR is strictly unidirectional and optimized for high-side sensing only. Its input stage cannot tolerate negative differential input (IN− > IN+) or common-mode voltages below GND. For bidirectional applications, TI recommends the INA226 or INA240 families, which feature true differential inputs and symmetric common-mode ranges.

What package type and marking does the INA216A4YFFR use?

The INA216A4YFFR uses the DSBGA (WCSP-4) package, 0.87mm × 0.87mm, with 0.4mm bump pitch. Its top-side marking is "OZ", consistent across all INA216A4 variants in YFF packaging. The device is RoHS-compliant, lead-free (SNAGCU finish), and rated MSL Level-1 (260°C peak reflow).