Texas Instruments INA216A1YFFT

Overview

INA216A1YFFT from Texas Instruments is a unidirectional, high-side current shunt monitor IC with 25V/V fixed gain, ±30μV max input offset voltage, 13μA quiescent current, and operation from +1.8V to +5.5V common-mode input range. It enables precision low-voltage drop current sensing in battery-powered portable electronics where space and power efficiency are critical.

For engineers reviewing the INA216A1YFFT datasheet, INA216A1YFFT pinout, INA216A1YFFT application, or INA216A1YFFT equivalent, this page delivers verified specifications, WCSP-4 package layout, real-world use cases in notebook computers and telecom equipment, and validated alternative options for current-sense design continuity.

Technical Context

The INA216A1YFFT uses zero-drift auto-zero architecture to achieve ±30μV maximum input offset voltage and 0.06μV/°C drift, enabling accurate measurement of shunt voltages as low as 10mV full-scale. Its common-mode input range spans +1.8V to +5.5V - powered directly from the IN+ pin - eliminating need for external supply rails.

This device integrates no internal output buffer; its 42Ω output impedance and rail-to-rail swing (to within 100mV of V+ and 1mV of GND) support direct connection to ADC inputs or microcontroller analog front-ends without additional op-amps. Bandwidth is 20kHz at C_L = 10pF, optimized for stable DC and low-frequency current monitoring.

Key Specifications

Pinout & Package

INA216A1YFFT is housed in a 4-bump DSBGA (WCSP-4) package, 0.87mm × 0.87mm, 0.4mm pitch, with bottom-side solder bumps. The ultra-compact footprint targets space-constrained portable PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA215A1YFFT and MAX4080TASA+, the INA216A1YFFT delivers superior offset performance and lowest quiescent current in the smallest package - making it optimal for next-generation portable and space-constrained power management systems requiring <0.3% current measurement accuracy.

Availability

INA216A1YFFT is available at Aetrix Electronics and suitable for notebook computers, cell phone battery chargers, telecom equipment, and industrial power supply diagnostics requiring stable component supply across long production lifecycles.

Supply support for INA216A1YFFT 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 current sensing in portable and battery-operated systems - emphasizing zero-drift performance, chip-scale packaging, and single-supply simplicity.

FAQ

What is the supply voltage requirement for INA216A1YFFT?

The INA216A1YFFT has no dedicated V_CC pin; it draws power from the IN+ pin. Its operational common-mode input range is +1.8V to +5.5V - meaning the voltage at IN+ must remain within this window. This eliminates external supply routing but requires careful placement on the high-side of the shunt. The INA216A1YFFT remains functional across this full range with guaranteed specs including ±30μV offset and 25V/V gain.

Does INA216A1YFFT require an external op-amp for ADC interfacing?

No. The INA216A1YFFT features a buffered voltage output with 42Ω impedance and rail-to-rail swing (to within 100mV of V+ and 1mV of GND), enabling direct connection to most 10kΩ-input ADCs without external buffering. Its 750pF capacitive load drive capability further ensures stability with typical sampling capacitor networks. This integrated output stage is a key differentiator of the INA216A1YFFT versus discrete current-sense solutions.

What is the maximum shunt voltage the INA216A1YFFT can accurately measure?

The INA216A1YFFT supports full-scale differential input voltages up to 100mV at 25V/V gain - corresponding to a maximum output of 2.5V with a 5V common-mode supply. Due to its ±30μV max offset, usable linear range starts at ~10mV differential input (0.25V output), enabling reliable measurement down to ~1% of full scale. For example, with a 10mΩ shunt, the INA216A1YFFT resolves currents from 1A to 10A with <0.3% total error.

Can INA216A1YFFT be used in low-side current sensing configurations?

No. The INA216A1YFFT is explicitly designed for high-side sensing only. Its input stage is not rated for common-mode voltages near ground - the absolute minimum common-mode voltage is +1.8V. Attempting low-side use (shunt between load and GND) forces IN− and IN+ below 1.8V, violating absolute maximum ratings and causing undefined behavior or damage. For low-side sensing, TI recommends alternatives like the INA199 series.

What package type and marking does INA216A1YFFT use?

The INA216A1YFFT uses a 4-bump DSBGA (WCSP-4) package, 0.87mm × 0.87mm, with SNAGCU (tin-silver-copper) bump finish and Level-1 moisture sensitivity. Its top-side marking is "OW", and the package designation is YFF. This chip-scale construction supports fine-pitch automated assembly and achieves thermal resistance θ_JA = 160°C/W - critical for thermally constrained handheld PCBs where the INA216A1YFFT operates.