Texas Instruments INA216A4YFFT

Overview

INA216A4YFFT 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 delivers buffered voltage output without external op-amp support and targets precision battery charge monitoring in space-constrained portable electronics.

For engineers reviewing the INA216A4YFFT datasheet, INA216A4YFFT pinout, INA216A4YFFT application, or INA216A4YFFT equivalent, key selection criteria include its 200× gain for low-shunt-voltage sensing (e.g., 10–20mV full-scale), chip-scale WCSP-4 package footprint, –40°C to +125°C temperature rating, and zero-drift architecture enabling >1000:1 dynamic range in power management systems.

Technical Context

The INA216A4YFFT uses auto-zeroing zero-drift amplifier topology to achieve ±20μV max input offset and 0.1μV/°C typical drift, enabling accurate sub-20mV shunt voltage measurement. Its input stage operates directly from the IN+ pin, eliminating a dedicated supply pin but constraining minimum common-mode voltage to +1.8V.

With 2.5kHz bandwidth and 0.03V/μs slew rate, it supports stable DC and low-frequency current monitoring. The device draws only 13μA quiescent current and features 90dB min CMRR and PSRR - critical for rejecting noise in noisy supply rails like battery chargers and telecom power modules.

Key Specifications

Pinout & Package

INA216A4YFFT is housed in a 4-bump DSBGA (WCSP-4) package measuring 1.0mm × 1.0mm × 0.5mm, optimized for ultra-compact PCB layouts in mobile and wearable devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA216A4YFFT, INA215A4YFFT trades offset performance for lower cost and higher bandwidth, while MAX40016AUB+ offers comparable gain but sacrifices size and power efficiency - making INA216A4YFFT optimal for miniaturized, low-power, high-accuracy current sensing.

Availability

INA216A4YFFT is available at Aetrix Electronics and suitable for battery fuel gauging, USB-C power delivery monitoring, and telecom power shelf supervision requiring stable component supply across extended product lifecycles.

Supply support for INA216A4YFFT 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 space-constrained systems - emphasizing zero-drift performance, minimal footprint, and wide common-mode operation.

FAQ

What is the maximum common-mode voltage the INA216A4YFFT can handle?

The INA216A4YFFT supports a common-mode input range of +1.8V to +5.5V. Its absolute maximum rating is +7V on the supply (IN+) pin, but operation beyond +5.5V violates specification limits and risks parametric degradation. For transient protection above 5.5V, external zener-based clamping with series resistors (e.g., 10Ω) is recommended per TI's application guidance - the INA216A4YFFT itself does not integrate overvoltage protection.

Does the INA216A4YFFT require an external power supply pin?

No, the INA216A4YFFT has no dedicated VDD pin. It derives power directly from the IN+ pin, which serves as both high-side shunt connection and supply input. This architecture eliminates one PCB trace but fixes the minimum common-mode voltage at +1.8V - making the INA216A4YFFT unsuitable for low-side sensing or sub-1.8V rail monitoring. All internal circuitry, including the output buffer, operates from this single point.

What is the output swing capability of the INA216A4YFFT?

The INA216A4YFFT output swings to within 100mV of the positive rail (V_IN+) and to within 1mV of ground under 10kΩ load conditions. Specifically, with V_IN+ = 5.5V, the output ranges from ~0.001V to ~5.4V. This rail-to-rail–adjacent performance enables direct interface with 12-bit SAR ADCs without level-shifting, and the integrated buffer obviates external op-amps - a key advantage confirmed in TI's SBOS503C datasheet Figure 9.

Can the INA216A4YFFT be used with a 10mΩ shunt resistor at 10A full-scale?

Yes. With 200V/V gain, a 10A current through a 10mΩ shunt produces 100mV differential input, yielding a 20V output - exceeding the device's +5.5V supply limit. To stay within spec, use a 2mΩ shunt: 10A × 2mΩ = 20mV input → 4.0V output at V_IN+ = 4.2V. This matches TI's Example 1 design case and ensures linearity, thermal stability, and adherence to the 200mV-max output headroom rule stated in the datasheet.

Is the INA216A4YFFT pin-compatible with other variants in the INA216 family?

Yes - all WCSP-4 packaged INA216 variants (A1–A4) share identical YFF package pinout (IN+, IN−, GND, OUT) and footprint. Gain is set internally during fabrication; no external resistors or configuration pins are required. This allows hardware reuse across designs needing different gains (25/50/100/200V/V), provided firmware or downstream ADC scaling accommodates the gain change. The RSW (10-pin) variants are not pin-compatible.