TAS5103DAP - 15W Stereo PWM Class-D Amplifier | Texas Instruments
MPN： TAS5103DAP ✓ 啟用中TAS5103DAP 概覽
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.
直接替換替代品，適用於 TAS5103DAP — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TAS5103DAP （相同外形與佔位） — 差異在於 Mounting Type, Number of Channels.
此產品無可直接替換的替代品。
申請替代品TAS5103DAP 最大額定值與電氣特性
| 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 |
| 輸出雜訊 | Low integrated output noise |
| Distortion | Low THD+N performance |
| Idle Power Dissipation | Low idle power dissipation |
| Package Type | 32-pin HTSSOP (DAP) |
| 安裝類型 | Surface mount |
TAS5103DAP 32-pin htssop (dap) 腳位配置指南
TAS5103DAP（32-pin htssop (dap) 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： TAS5103DAP.
請參閱 資料表 以查看完整腳位配置。
典型應用
TAS5103DAP 適用於 6 應用s: 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.
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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.
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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.
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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.
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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.
推薦
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.
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推薦產品摘要
工程參考資料，適用於 TAS5103DAP — 比較、設計指引及合規資訊。
選型指南
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.
設計說明
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.
合規資訊
The manufacturer product records establish the device category and electrical headline parameters but do not state the requested compliance details.
