TAS5518PAG - 8-Channel Digital Audio PWM Processor | Texas Instruments
部品番号: TAS5518PAG ✗ 生産終了TAS5518PAG 概要
A digital audio PWM processor is a mixed-signal audio IC that accepts digital audio information and controls PWM-based amplifier stages. Within the audio signal-chain hierarchy, it sits between a digital audio source and a power-amplifier or speaker-driving circuit. Unlike a conventional analog power amplifier, the TAS5518PAG manages digital modulation data, volume-related functions, and channel integration, allowing the connected amplifier stage to reproduce the intended audio signal.
The principal system benefit is high integration. According to the Texas Instruments product information, the TAS5518PAG supports eight digital audio channels in one device. A well-designed system can achieve typical dynamic range of 110 dB, while the power supply volume control feature provides up to 24 dB of additional dynamic range at normal listening levels. This combination can reduce external control-component complexity and centralize audio-volume behavior across multiple channels.
The TAS5518PAG also provides direct support for digital-audio signal processing before the PWM output stage. This architecture is appropriate for multichannel consumer-audio equipment where synchronized channel control and system-level volume management are more important than a conventional standalone analog output stage. Its 64-pin TQFP (PAG) package provides the pin count needed for multichannel digital interfaces, control signals, power connections, and multiple PWM outputs.
Typical uses include powered speakers, soundbars, home-theater audio systems, active speakers, multichannel audio receivers, and compact consumer audio products. The device can serve as the central PWM processor in an eight-channel signal path when its digital interface, output arrangement, and power architecture align with the selected amplifier topology. Board-level implementation must account for clean power, grounded return paths, signal integrity, and thermal performance.
Designers should verify the complete pin arrangement, recommended external components, interface timing, and power-supply requirements in the manufacturer datasheet before routing a new PCB. Because this orderable designation is marked as not recommended for new designs, new products should first evaluate TI's current alternate-part recommendations and confirm functional, firmware, and mechanical compatibility rather than assuming direct interchangeability.
This page consolidates the device classification, verified package information, lifecycle position, candidate replacement information, and practical selection guidance. It also distinguishes confirmed drop-in information from broader functional alternatives, helping engineers make a defensible sourcing decision without treating similar audio processors as footprint-compatible substitutes.
ドロップイン代替品: TAS5518PAG — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
TAS5518CPAG
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TAS5518PAG 最大定格＆電気的特性
| Product Type | 8-channel digital audio PWM processor |
| Number of Audio Channels | 8 channels |
| Typical System Dynamic Range | 110 dB |
| Power Supply Volume Control Additional Dynamic Range | Up to 24 dB |
| パッケージ | 64-pin TQFP (PAG), 10 x 10 mm |
| ピン数 | 64 pins |
| 実装タイプ | Surface mount |
| Product Category | Audio modulator / audio special purpose |
| Digital Audio Processing | 8-channel digital PWM processing |
| Power Supply Volume Control | Supported; up to 24 dB additional dynamic range |
| New-Design Recommendation | Not recommended for new designs |
TAS5518PAG 64-pin tqfp (pag), 10 x 10 mm ピン配置ガイド
TAS5518PAG (64-pin tqfp (pag), 10 x 10 mm パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: TAS5518PAG.
詳細は データシート をご参照ください。
主な用途
TAS5518PAG の用途: 6 件s: Powered Stereo and Multichannel Speakers, Home-Theater Audio Systems, Soundbars and Compact Audio Products, Active Speaker Network Components, Digital Audio Amplifier Front Ends, Multichannel Gaming and Audio Peripherals.
Powered Stereo and Multichannel Speakers
The TAS5518PAG fits powered-speaker designs that need centralized digital audio-channel handling for an eight-channel signal path. Its 8-channel PWM-processing architecture reduces the need for separate digital audio routing and modulation functions, while the 110 dB typical system dynamic range gives the design ample headroom for high-fidelity reproduction. Power supply volume control can add up to 24 dB of dynamic range at normal listening levels, allowing the implementation to preserve perceived output quality as signal level changes. The device should be paired with an amplifier topology whose expected PWM inputs match its outputs, and the PCB should provide short, well-controlled digital signal routes and a clean power-supply reference.
おすすめ
Home-Theater Audio Systems
The TAS5518PAG is applicable to home-theater systems where multiple amplified channels require coordinated digital audio processing. Its eight-channel architecture can cover the main speaker channels and additional surround or height channels within one system, while the 110 dB typical dynamic range supports low-distortion audio reproduction in a well-designed signal chain. The power supply volume control function provides up to 24 dB of additional dynamic range at normal listening levels, which is useful when maintaining output consistency across a broad volume-control range. Integration still requires checking channel mapping, digital audio synchronization, PWM timing, amplifier compatibility, and thermal conditions in the final enclosure.
おすすめ
Soundbars and Compact Audio Products
A soundbar or compact powered-audio product benefits from the TAS5518PAG's integration of eight digital audio channels into one 64-pin TQFP (PAG) device. The architecture is useful where multiple driver channels must be managed from a digital source and where analog preamplifier design would add components or reduce scalability. The manufacturer reports a typical system dynamic range of 110 dB, while power supply volume control contributes up to 24 dB of additional dynamic range at normal listening levels. Because enclosure space is limited, layout should prioritize short digital routes, stable supply filtering, adequate thermal spreading around the TQFP, and clean grounding between the processor and the external PWM power stage.
おすすめ
Active Speaker Network Components
The TAS5518PAG can serve as the digital PWM controller in active speaker products that distribute multiple audio channels through a network or digital audio link. Eight-channel processing supports systems requiring coordinated volume and signal management without eight separate controller packages. Its typical 110 dB system dynamic range is useful for high-quality playback, and the power supply volume control feature can preserve dynamic range at normal listening levels. System designers must align the digital input format, clocking, channel allocation, and PWM outputs with the selected speaker amplifier and network interface. The final design should also validate startup behavior, supply sequencing, thermal performance, and signal integrity across the full system rather than only at the processor pins.
おすすめ
Digital Audio Amplifier Front Ends
The TAS5518PAG is suitable for the digital front end of an eight-channel PWM amplifier when the system benefits from centralized channel processing. Instead of relying on separate analog preamplifiers and volume-control blocks, the processor provides a digital path capable of supporting a typical 110 dB system dynamic range. Its power supply volume control function can contribute up to 24 dB of additional dynamic range at normal listening levels, which is valuable in space-constrained audio products. Integration requires matching the processor to the amplifier's PWM expectations and defining how digital clipping, volume limits, and channel mapping are handled. Board layout should isolate sensitive digital returns, provide local supply bypass, and minimize loop area around the processing circuitry.
おすすめ
Multichannel Gaming and Audio Peripherals
The TAS5518PAG can support multichannel gaming peripherals, entertainment consoles, or accessory speakers that require more than two synchronized audio outputs. Eight-channel digital PWM processing provides a centralized way to manage channel routing and system volume within a compact 64-pin TQFP package. The 110 dB typical system dynamic range supports high-fidelity reproduction, while up to 24 dB of additional dynamic range from power supply volume control can improve performance at normal listening levels. Engineers should verify whether the product's channel count and interface timing justify the processor's integration, then confirm amplifier topology, latency requirements, and digital clocking. A controlled return-path and supply layout is essential when the device sits close to high-current amplifier switching stages.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: TAS5518PAG — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | TAS5518CPAG |
|---|---|---|
| Package | 64-pin TQFP (PAG) | 64-pin TQFP (PAG) |
| Brand | Texas Instruments | Texas Instruments |
| Product Type | 8-channel digital audio PWM processor | 8-channel digital audio PWM processor |
| Audio Channels | 8 channels | 8 channels |
| Pin Compatibility | Reference device | Complete pin-and-function replacement; no circuit modification required |
| Lifecycle Position | Not recommended for new designs | NRND |
| Pin Count | 64 pins | 64 pins |
主な差別化要因
- Confirmed pin-and-function replacement （vs TAS5518CPAG)
- Eight-channel digital audio integration （vs TAS5518CPAG)
- Lifecycle distinction for sourcing （vs TAS5518CPAG)
- Power supply volume control （vs TAS5518CPAG)
設計ノート
Place the TAS5518PAG's digital interface and PWM connections according to the manufacturer layout guidance, keeping signal traces short and routing them away from switching-node and high-current amplifier paths. Maintain a continuous ground reference beneath and around the device, connect local bypass capacitors directly to the relevant power and ground pins, and verify that return currents do not share narrow paths with the external PWM power stage.
Treat the clock, digital audio data, control, and PWM signals as a coordinated interface rather than independent nets. Confirm source timing, voltage levels, channel mapping, and board-level timing margin against the current manufacturer datasheet. If the audio processor is placed near a switching power stage or amplifier output network, increase trace spacing and use a stable ground reference to reduce coupling between digital control signals and high-energy power paths.
Thermal performance depends on the complete system because external PWM power stages and the surrounding enclosure can influence heat flow around the 64-pin TQFP package. Provide suitable copper area under and around the device, follow the manufacturer's layout and thermal recommendations, and evaluate the complete amplifier assembly under maximum channel activity. The processor's dynamic-range capability does not remove the need to control heat in a densely packaged audio product.
Do not treat TAS5508B or another functionally similar audio PWM processor as a drop-in replacement without confirming the complete pin list, digital interface, clocking, PWM timing, supply requirements, and control protocol. For TAS5518CPAG, verify the current manufacturer documentation and product status before changing the assembled BOM because the parts are described as pin-and-function compatible but have different lifecycle designations.
コンプライアンス情報
The available information identifies TAS5518CPAG as Green compliant but does not provide a compliance statement for TAS5518PAG itself.
