LM4951ASD Texas Instruments Integrated Circuit (Small Outline No-lead) In Stock
Texas Instruments LM4951ASD is a mono audio power amplifier delivering 1.8 W nominal output power with 1% harmonic distortion in a compact 10-pin SOIC no-lead package. It targets portable consumer audio applications and is available worldwide.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 10
- Lifecycle
- OBSOLETE
- Datasheet
- LM4951ASD Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1.8 W nominal audio output power with only 1% harmonic distortion for clear mono speaker amplification
- Single-channel audio amplifier in a compact 10-pin SOIC no-lead package minimizing PCB footprint
- Designed for portable consumer electronics requiring an efficient, low-component-count speaker driver solution
- Plastic/epoxy package construction suitable for standard SMT reflow assembly in consumer audio product lines
Applications
The LM4951ASD is designed for portable radios, alarm clocks, small multimedia speakers, and consumer electronics requiring a compact 1.8 W mono audio amplifier. Its low harmonic distortion of 1% and single-channel 10-pin SOIC no-lead package make it a practical solution for tablet audio output stages, handheld game device speakers, and low-cost smart home audio devices where board space is limited.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Consumer IC Type | AUDIO AMPLIFIER |
| Harmonic Distortion | 1% |
| JESD-30 Code | S-PDSO-N10 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Output Power-Nom | 1.8W |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC10,.16,32 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| Supply Current-Max | 4.5mA |
| Supply Voltage-Max (Vsup) | 9V |
| Supply Voltage-Min (Vsup) | 2.7V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.8mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the nominal output power and harmonic distortion level of the LM4951ASD?
The LM4951ASD delivers 1.8 W of nominal output power with a harmonic distortion specification of 1% THD, providing acceptably clean audio reproduction for mono speaker applications such as alarm clocks, portable radios, and consumer electronic devices where size and cost constraints are primary design drivers.
For a compact alarm clock PCB, how does the 10-pin SOIC no-lead package of LM4951ASD compare to a DIP alternative?
The 10-pin SOIC no-lead package of LM4951ASD occupies a footprint of approximately 3x3 mm, far smaller than a DIP-8 package which exceeds 10 mm in length. This compact footprint enables tighter PCB layouts in space-constrained consumer products like alarm clocks and small Bluetooth speakers delivering 1.8 W output power.
In which portable consumer applications is the LM4951ASD 1.8 W mono amplifier most commonly used?
The LM4951ASD suits portable radios, handheld game consoles, tablet secondary speakers, and battery-operated alarm devices requiring a single 1.8 W mono audio channel with minimal external component count. Its 1% THD ensures adequate audio fidelity for voice, alert tones, and music reproduction in devices with supply voltages typical of 3.3 V to 5 V systems.
How does the LM4951ASD compare to the LM4950 for single-speaker consumer product designs?
The LM4951ASD and LM4950 are both mono audio amplifiers in the LM495x family targeting 1 W to 2 W speaker drivers, with LM4951ASD specified at 1.8 W nominal output. For designs already using LM4950 at lower power, migrating to LM4951ASD in the same 10-pin SOIC no-lead footprint provides additional output headroom without PCB layout changes or increased board area.
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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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