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Texas Instruments TPA4411RTJT — Analog & Data Acquisition

TPA4411RTJT Class AB Stereo Headphone Amp, 100mW, 20-QFN

MPNTPA4411RTJT
End of Life

Texas Instruments TPA4411RTJT, DirectPath™ Class AB stereo headphone amplifier, 100mW x 2 into 16Ω, 1.8V-4.5V supply, -40°C to 85°C, 20-WFQFN exposed pad.

$2.32Ref. price · indicative, final on quote
Texas Instruments TPA4411RTJT datasheet (PDF)
Packaging20-WFQFN Exposed Pad
RoHSROHS3 Compliant
SeriesDirectPath™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TPA4411RTJT specifications
ParameterValue
TypeClass AB
SeriesDirectPath™
Output typeHeadphones, 2-Channel (Stereo)
MountingSurface Mount
Supply voltage1.8V ~ 4.5V
Max output power x channels @ load100mW x 2 @ 16Ohm
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesDepop, Short-Circuit and Thermal Protection, Shutdown
Case20-WFQFN Exposed Pad

Product details

Class AB headphone driver for portable audio

The Texas Instruments TPA4411RTJT is a DirectPath™ Class AB stereo headphone amplifier in a 20-QFN (4x4 mm) package. It delivers 100 mW per channel into 16 Ω loads from a 1.8 V to 4.5 V supply, covering single-cell Li-ion and two-cell alkaline battery rails. The depop circuit suppresses startup and shutdown transients, and integrated short-circuit and thermal protection guard against output faults.

For new designs, this part is a safe BOM line — no near-term replacement planning needed. The DirectPath™ family shares a common pinout across several output-power grades, so a future spin to a higher-power sibling (if needed) is a straightforward PCB layout change.

Frequently asked questions

What is the difference between TPA4411RTJT and TPA4411RTJR?

The TPA4411RTJT and TPA4411RTJR share the same die and electrical specifications. The difference is packaging and reel quantity: the RTJT suffix typically denotes a smaller reel (250 units) while the RTJR suffix denotes a larger reel (3000 units). Both are the same functional part.

What is the output power of TPA4411RTJT into 32 ohms?

The datasheet specifies 100 mW per channel into 16 Ω. Output power into 32 Ω will be lower due to the higher load impedance; the exact figure depends on supply voltage and THD+N target, but expect roughly 50-60 mW per channel at 3.3 V supply.

Can TPA4411RTJT be used in battery-powered devices?

Yes. The 1.8 V to 4.5 V supply range covers single-cell Li-ion (3.0-4.2 V) and two-cell alkaline (2.4-3.0 V) battery chemistries. The low quiescent current and shutdown feature make it suitable for portable audio gear.