TAS5103DAP - 15W Stereo PWM Class-D Amplifier | Texas Instruments
N.º de pieza: TAS5103DAP ✓ ActivoTAS5103DAP Descripción general
A Class-D audio amplifier is a switching power amplifier that converts PWM signals into high-frequency bridge-tied output currents. It belongs to the amplifier IC hierarchy, where Class-D topology -> audio power amplifier -> audio signal-processing IC -> semiconductor. Compared with an analog linear output stage, a properly filtered Class-D design can provide high output power with lower power dissipation, although output filtering and electromagnetic compatibility remain important design considerations.
The TAS5103 is designed to deliver up to 15 W per channel into an 8 ohm bridge-tied load from an 8 V to 23 V supply. Its integrated digital power stages support stereo audio amplification, while its PWM input architecture allows a digital audio processor to control the output waveform directly. The device also incorporates an advanced protection system and is intended for low-cost, high-fidelity audio systems built around compatible digital signal processing and codec chips.
The architecture separates PWM signal generation from output-current amplification. This makes the TAS5103DAP appropriate for systems in which a host processor, audio codec, or dedicated modulator produces differential PWM signals. The class-D output stage then develops the full bridge-tied speaker voltage. Compared with a conventional analog-input amplifier, this arrangement can reduce the number of signal-chain stages and supports deterministic digital control of the speaker drive.
Typical uses include powered speakers, compact stereo systems, sound bars, automotive audio modules, and other low-voltage audio products. Designers should select the modulation method, differential routing, output filtering, and speaker network together with the amplifier because PWM timing, dead time, switching noise, and output inductance directly affect fidelity and electromagnetic emissions.
A critical layout requirement is a short, symmetric output path between the device, LC filter, and speaker connector. Keep switching-current loops compact, use a continuous ground plane, and follow the manufacturer datasheet for component selection and thermal pad layout. Adequate copper around the exposed pad supports heat transfer from the power stage into the PCB.
This page combines the official product parameters with application guidance, package information, sourcing questions, and drop-in-replacement analysis. It also identifies the boundaries of the available replacement evidence so engineers can avoid assuming that a similar Class-D amplifier is electrically and physically interchangeable.
Alternativas directas para TAS5103DAP — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con TAS5103DAP (mismo factor de forma y huella) — difiere en Mounting Type, Number of Channels.
No hay alternativas directas disponibles para este producto.
Solicitar alternativasTAS5103DAP Valores máximos y características eléctricas
| Product Type | Stereo PWM-input open-loop Class-D audio power amplifier |
| Number of Channels | 2 channels |
| Maximum Output Power | 15 W per channel |
| Power per Channel | 20 W/15 W per channel |
| Supply Voltage Range | 8 V to 23 V |
| Supported Load | 8 ohm bridge-tied load |
| Input Architecture | PWM input, open loop |
| Output Architecture | Bridge-tied load |
| Protection Features | Advanced integrated protection system |
| Ruido de salida | Low integrated output noise |
| Distortion | Low THD+N performance |
| Idle Power Dissipation | Low idle power dissipation |
| Package Type | 32-pin HTSSOP (DAP) |
| Tipo de montaje | Surface mount |
Guía de configuración de pines de TAS5103DAP 32-pin htssop (dap)
Configuración de pines para TAS5103DAP (encapsulado 32-pin htssop (dap)). Este componente analógico presenta pines de entrada, salida y alimentación. Consulte la hoja de datos del fabricante para conocer las configuraciones de los pines de ajuste de offset, compensación y habilitación. Ideal para circuitos de acondicionamiento de señal y amplificadores.
No hay datos detallados de patillaje disponibles para TAS5103DAP.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
TAS5103DAP es adecuado para 6 aplicacións: Compact Powered Stereo Speaker, Digital Sound Bar Output Stage, Automotive Audio Power Module, USB-C Multimedia Speaker, Industrial Audio Control Console, Networked Active Speaker Node.
Compact Powered Stereo Speaker
The TAS5103DAP fits a compact stereo speaker powered from an 8 V to 23 V rail when the signal chain can generate differential PWM outputs. Its two integrated Class-D channels can develop up to 15 W per channel into an 8 ohm bridge-tied load, reducing the number of separate output amplifiers required. The design must include carefully selected LC output filters, a low-impedance speaker return path, and a continuous ground reference. The main engineering trade-off is that PWM modulation can create switching ripple and electromagnetic emissions, so filter layout and switching-loop control can determine whether the system meets its acoustic and EMC targets.
Recomendado
Digital Sound Bar Output Stage
The TAS5103DAP is appropriate for the amplified output section of a digital sound bar where a host processor supplies synchronized PWM signals. Two integrated output channels support left and right speaker amplification from an 8 V to 23 V supply, with up to 15 W available per channel for an 8 ohm bridge-tied load. Compared with an analog input amplifier, this arrangement keeps digital modulation under firmware control and can simplify the signal path. The enclosure must accommodate the output filters, while the PCB should use symmetrical routing and a stable ground plane to minimize channel-to-channel timing and acoustic differences.
Recomendado
Automotive Audio Power Module
The TAS5103DAP can support a low-voltage automotive audio module when its electrical and qualification requirements are confirmed for the intended vehicle platform. Its 8 V to 23 V operating range is compatible with common low-voltage audio rails, while two 15 W Class-D channels provide useful output power for door speakers or small cabin speakers. A production design must verify transient behavior, ground offsets, temperature range, electromagnetic interference, and the applicable automotive qualification status. The exposed-pad thermal path also requires careful PCB copper because automotive ambient temperatures can reduce available power dissipation margin.
Recomendado
USB-C Multimedia Speaker
The TAS5103DAP is suitable for a USB-C multimedia speaker when a digital audio processor or codec provides the required PWM input signals. The amplifier can deliver up to 15 W per channel into an 8 ohm bridge-tied load from an 8 V to 23 V supply, making it useful for compact desktop or portable speaker systems. A key benefit is the elimination of a separate analog power-amplifier stage when the source is already digital. Designers must coordinate modulator timing with the power stage, account for the Class-D filter network, and verify that cable or enclosure structures do not create excessive ground loops.
Recomendado
Industrial Audio Control Console
The TAS5103DAP can serve as the stereo speaker-output stage in an industrial console, control panel, or status-audio system driven by a digital signal processor. Its two Class-D channels provide up to 15 W per channel into 8 ohm bridge-tied loads while the integrated protection system adds resilience beyond the basic amplifier function. Industrial systems may use long speaker cables, making output stability, grounding, and electromagnetic compatibility important. The implementation should validate the PWM interface timing, include the prescribed output filters, and provide copper areas that maintain heat transfer under continuous duty cycles.
Recomendado
Networked Active Speaker Node
The TAS5103DAP fits an active network speaker node that receives digital audio commands or PCM data through a processor and converts the associated PWM drive into stereo speaker power. The 8 V to 23 V supply range and two output channels support low-voltage deployments, while the open-loop architecture allows the upstream modulator to determine timing and signal shaping. Compared with a conventional analog amplifier chain, this configuration can reduce analog circuitry and centralize audio behavior in firmware. The board must still provide robust filtering, synchronized routing, surge protection for external connections, and a quiet reference and power-supply layout.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para TAS5103DAP — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Do not choose the TAS5103DAP solely by package dimensions when the source is analog; that configuration would require additional signal conversion and may be less efficient overall. Nor should a similar 32-pin Class-D amplifier be treated as interchangeable without verifying every pin and interface parameter. For applications that require direct analog input, a suitable analog-input Class-D amplifier is usually easier to implement. For designs that require automotive qualification, confirm the device's qualification and temperature specifications before release.
Notas de diseño
Use the Texas Instruments TAS5103 datasheet land pattern and pin-description table when laying out the 32-pin HTSSOP DAP footprint. Place input, supply, and output connections to minimize loop area, keep the two stereo channels geometrically well matched, and route the exposed pad to a low-impedance thermal and electrical ground plane. Do not substitute a generic HTSSOP symbol without confirming pin numbering, exposed-pad dimensions, and paste geometry.
Design the 8 V to 23 V supply for both average demand and switching transients. Place local high-frequency decoupling at the device's supply pins with very short ground returns, and verify ripple against the amplifier's noise and distortion behavior. Estimated power loss must use the actual VIN, VOUT, load current, and efficiency; begin with POUT divided by efficiency minus POUT, then compare the resulting heat with the PCB thermal design.
Treat each Class-D output as a high-current switching node rather than a conventional audio output. Keep the amplifier-to-filter-to-speaker path short, use appropriately wide conductors, minimize loop area, and maintain symmetric routing between complementary outputs. Incorrect filter placement or long traces can increase switching ripple, radiated emissions, distortion, and susceptibility to ground noise.
Do not substitute a Class-D amplifier solely because it uses a similar 32-pin DAP package. Verify the input interface, PWM polarity and timing, logic levels, pin functions, supply limits, exposed-pad connection, protection behavior, thermal resistance, and output-filter requirements. The TAS5103 is an open-loop PWM power stage, so a part intended for analog audio inputs cannot be assumed to be a pin-compatible replacement.
Información de cumplimiento
The manufacturer product records establish the device category and electrical headline parameters but do not state the requested compliance details.
