TPA6111A2D Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments TPA6111A2D is a 150 mW stereo headphone audio amplifier in an 8-pin SOIC package, delivering 20 dB gain with 0.1% THD across a 20 kHz audio bandwidth and dual channels. Pin-compatible with LM4880 and LM4881 for direct board replacement. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- TPA6111A2D Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5895(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual-channel 150 mW headphone amplifier with 20 dB fixed gain and 0.1% THD for high-fidelity stereo audio output in portable devices
- 20 kHz flat audio bandwidth covers the full human hearing range with minimal frequency roll-off, ensuring accurate headphone audio reproduction
- Pin-compatible with LM4880 and LM4881 enabling drop-in board-level replacement without PCB redesign or software changes
- Compact 8-pin SOIC (R-PDSO-G8) footprint minimizes PCB area in space-constrained portable audio and communication device designs
Applications
The TPA6111A2D is designed for portable consumer electronics such as MP3 players, smartphones, and tablet audio subsystems where stereo headphone output must deliver clear audio at 150 mW per channel from a single-supply rail. Its low THD of 0.1% and 20 kHz bandwidth also make it suitable for USB audio dongles, Bluetooth speaker front-ends, and laptop headphone jack drivers that demand audiophile-grade signal fidelity in a small package. The LM4880/LM4881 pin compatibility allows it to serve as a direct cost-optimized upgrade in existing audio board designs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Bandwidth-Nom | 20kHz |
| Consumer IC Type | AUDIO AMPLIFIER |
| Gain | 20dB |
| Harmonic Distortion | 0.1% |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Channels | 2 |
| Number of Functions | 1 |
| Output Power-Nom | 0.15W |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 3.2mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPA6111A2D:
Frequently Asked Questions
What output power and THD does the TPA6111A2D deliver per channel into a headphone load?
The TPA6111A2D delivers 150 mW per channel into a 16-ohm headphone load with total harmonic distortion of 0.1% at 1 kHz. This combination of output power and low distortion provides sufficient volume for standard 32-ohm headphones while maintaining audio fidelity that meets consumer electronics quality requirements.
Over what frequency range does the TPA6111A2D maintain flat gain, and how does that affect headphone audio quality?
The TPA6111A2D is specified with a 20 kHz nominal bandwidth, covering the full range of human hearing from 20 Hz to 20 kHz. Its 20 dB fixed gain is maintained flat across this band, ensuring bass, midrange, and treble frequencies are amplified equally without equalization and that headphone drivers produce accurate audio reproduction.
Which legacy ICs is the TPA6111A2D pin-compatible with, and what does that mean for redesign cost?
The TPA6111A2D is pin-compatible with the National Semiconductor LM4880 and LM4881 headphone amplifiers in the 8-pin SOIC package. This means an engineer can substitute the TPA6111A2D on an existing PCB without any layout changes, reducing board redesign costs to zero and shortening qualification time when the original part becomes obsolete or when a lower-cost second source is needed.
How many audio channels does the TPA6111A2D support, and what is its intended load impedance range?
The TPA6111A2D integrates 2 independent amplifier channels for stereo output. It is designed to drive 16-ohm to 32-ohm headphone loads directly from its output pins. At 32 ohms the output power is lower than the 150 mW specified at 16 ohms, so designers should verify the output level at their target headphone impedance during system-level audio testing.
In a portable audio design, why would an engineer choose the TPA6111A2D over a discrete transistor headphone driver?
A discrete transistor headphone driver requires separate biasing resistors, coupling capacitors, and feedback networks, adding 8 to 15 passive components and significant PCB area. The TPA6111A2D integrates all of this in a single 8-pin SOIC, reducing component count by at least 10 parts, cutting total BOM cost, and shrinking the audio output stage to under 30 mm2 of PCB footprint while guaranteeing 0.1% THD without manual tuning.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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| 1+ | $1.2105 | $1.21 |
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| 16+ | $0.7263 | $11.62 |
| 10000+ | $0.7036 | $7036.00 |
| 100000+ | $0.5895 | $58950.00 |
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