TAS5548DCA - 8-Channel 96kHz PWM Audio Processor | TI
部品番号: TAS5548DCA ✓ 生産中TAS5548DCA 概要
An audio processor is a specialized interface IC that manages digital audio data between source devices and power-conversion stages. Within the broader hierarchy, the TAS5548DCA belongs to digital audio processing, audio system semiconductors, and power-management signal-chain components. Its PWM outputs provide a digital representation of audio waveforms for downstream amplification and speaker-drive circuitry.
The device includes two asynchronous sample-rate-converter modules, with each module handling four channels. This arrangement allows the processor to support multichannel operation and aligns it with DTS-HD-compatible Blu-ray home-theater-in-a-box applications identified by Texas Instruments. The architecture also consolidates digital audio processing, sample-rate conversion, and eight-channel PWM modulation into one package.
TAS5548DCA is controlled through an external I2C interface, enabling an embedded host or audio system controller to configure the processor and manage its operating state. Integrating digital control with multichannel PWM output reduces the number of separate functional blocks needed in compatible home-theater and powered-speaker systems while preserving a centralized digital signal path.
Typical implementation areas include DTS-HD-compatible Blu-ray home-theater systems, multichannel powered speakers, digital active loudspeakers, home-theater processor boards, and other audio equipment requiring eight PWM channels. The 56-pin HTSSOP package is designed for surface-mount assembly, while the stated operating-temperature range is 0°C to +85°C.
Layout planning should prioritize short, controlled connections among the digital-audio inputs, I2C control interface, ground network, supply rails, and PWM outputs. Because the device combines high-channel-count processing with a fine-pitch surface-mount package, careful decoupling and return-path design are essential for reliable signal transfer and thermal performance.
This page combines the manufacturer product information with practical distinctions for evaluating the TAS5548DCA, including its 8-channel architecture, 96 kHz PWM operation, integrated ASRC, package format, application fit, and the documentation needed for PCB and firmware planning.
ドロップイン代替品: TAS5548DCA — 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。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストTAS5548DCA 最大定格＆電気的特性
| Product Type | 8-channel digital PWM audio processor |
| Number of Audio Channels | 8 channels |
| PWM Output Frequency | 96 kHz |
| Integrated ASRC | Yes |
| ASRC Module Count | 2 modules |
| Channels per ASRC Module | 4 channels |
| Digital Audio Processing | Integrated |
| Control Interface | I2C |
| 出力タイプ | Digital PWM |
| パッケージ | 56-pin HTSSOP |
| 実装タイプ | Surface mount |
| 動作温度 | 0°C to +85°C |
| Home-Theater Support | DTS-HD specification Blu-ray HTiB applications |
TAS5548DCA 56-pin htssop ピン配置ガイド
TAS5548DCA (56-pin htssop 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: TAS5548DCA.
詳細は データシート をご参照ください。
主な用途
TAS5548DCA の用途: 6 件s: DTS-HD Blu-ray Home Theater, Multichannel Powered Speaker, Digital Active Loudspeaker, Home-Theater Processor Board, Powered-Soundbar Electronics, Multichannel Automotive Audio.
DTS-HD Blu-ray Home Theater
The TAS5548DCA fits a DTS-HD-compatible Blu-ray home-theater-in-a-box design because Texas Instruments identifies it as an eight-channel digital PWM processor with digital audio processing and an integrated asynchronous sample-rate converter. Two ASRC modules, each handling four channels, support the processor’s multichannel architecture. The 96 kHz PWM output stage provides a digital audio signal for compatible downstream amplification. The 56-pin HTSSOP package supports surface-mount construction, while I2C control allows a system host to configure operating parameters.
Multichannel Powered Speaker
The TAS5548DCA can serve as the digital audio-processing front end in a multichannel powered-speaker platform. Eight PWM outputs and a 96 kHz modulation stage are suited to systems that receive digital audio and require a consolidated processor before conversion to power-amplifier drive signals. Its integrated ASRC can reduce the external sample-rate-conversion block count. The I2C interface also supports configuration by a host controller, while the 56-pin HTSSOP package permits compact surface-mount integration into an active-speaker controller board.
Digital Active Loudspeaker
In a digital active loudspeaker, the TAS5548DCA provides a centralized path for eight-channel digital audio processing, sample-rate conversion, and PWM modulation. This integration is useful when the speaker accepts digital streams and relies on downstream power stages to reconstruct the analog output. The device’s two four-channel ASRC modules align with its eight-channel organization, while the 96 kHz PWM output stage supports compatible high-rate audio designs. I2C control allows a system processor to select settings without adding a separate configuration interface.
Home-Theater Processor Board
The TAS5548DCA is suited to a dedicated home-theater processor board that must distribute digital audio across several amplification channels. Eight integrated channels reduce the need for separate PWM modulators, and the two asynchronous sample-rate-converter modules provide a conversion function within the same package. Its 96 kHz PWM output stage targets compatible digital audio paths, while the 56-pin HTSSOP format supports surface-mount assembly. I2C control permits the main system controller to manage configuration across the audio subsystem.
Powered-Soundbar Electronics
A powered soundbar can use the TAS5548DCA when its architecture requires multiple digital audio channels and centralized PWM modulation. The processor handles eight channels, including integrated sample-rate conversion through two four-channel ASRC modules. This can simplify signal organization compared with separate digital-to-analog and PWM-modulation stages in a compatible design. The 96 kHz PWM outputs feed compatible amplification stages, while I2C provides a common control path for host-managed configuration and operating-state control.
Multichannel Automotive Audio
The TAS5548DCA can be evaluated for multichannel automotive audio platforms that use a digital audio bus and PWM amplification architecture. Its eight-channel organization, integrated sample-rate conversion, and 96 kHz PWM output stage suit centralized audio processing, although the stated operating range of 0°C to +85°C requires attention in temperature-sensitive vehicle environments. I2C control simplifies host integration, and the 56-pin HTSSOP package supports surface-mount assembly. Automotive qualification requirements should be confirmed before production use.
エンジニアリング参考データ: TAS5548DCA — 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 |
|---|---|
| Product Type | 8-channel digital PWM audio processor |
| Brand | Texas Instruments |
| Package | 56-pin HTSSOP |
| Audio Channel Count | 8 channels |
| PWM Output Frequency | 96 kHz |
| Asynchronous Sample-Rate Converter | Integrated |
| ASRC Configuration | 2 modules with 4 channels per module |
| Control Interface | I2C |
| Operating Temperature | 0°C to +85°C |
設計ノート
Assign every physical position from the manufacturer datasheet pin-description table before routing the 56-pin HTSSOP layout. In particular, check the positions of the digital-audio interfaces, I2C signals, PWM outputs, supply connections, and ground pins rather than relying on another TI audio processor. Keep high-frequency digital traces short, provide a continuous return path, and match trace geometry where the interface timing budget requires controlled impedance.
Use the datasheet's recommended decoupling topology and place the associated capacitors close to their designated supply and ground pins. Separate the high-current supply distribution from sensitive digital-audio routing, and keep loop area small for every decoupling connection. The available information does not establish the complete power-consumption budget, so use the manufacturer electrical characteristics to evaluate regulator headroom, startup behavior, and the thermal margin of the complete board.
Do not treat an eight-channel processor with similar audio functions as a drop-in replacement without checking pin assignments, I2C behavior, ASRC ratios, digital-audio timing, PWM polarity, and downstream amplifier expectations. Host firmware may also depend on device-specific register behavior. Capture these checks in the schematic review and prototype bring-up plan, especially when changing from TAS5548DCA to another manufacturer or another processor architecture.
Plan the PCB with the digital-audio interfaces and PWM outputs as potentially high-speed paths. Avoid long stubs, unnecessary test-point branches, and splits in the ground reference beneath active circuitry. Apply the manufacturer's recommended interface layout and termination guidance where required. Validate timing margins and output integrity on hardware because the processor integrates sample-rate conversion, digital processing, and eight-channel PWM generation within one signal chain.
コンプライアンス情報
The manufacturer product information identifies the TAS5548 as an audio amplifier solution, but no explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals status is stated.
