TAS5558DCA - 8-Channel HD Audio DSP with PWM | Texas Instruments
부품 번호: TAS5558DCA ✓ 활성TAS5558DCA 개요
A digital audio processor is a specialized integrated circuit that accepts digital audio data, performs configurable signal processing, and produces a format suitable for downstream power amplification. Within the broader semiconductor hierarchy, the TAS5558DCA belongs to the audio special-purpose IC and digital signal processor categories. Its integrated sample-rate converter, digital audio processing, and PWM generation combine several discrete audio functions into one high-integration device.
The principal feature set includes eight audio processing channels, advanced digital audio processing, an integrated sample-rate converter, and eight PWM outputs. These functions target HD-compatible home-theater-in-a-box applications described by Texas Instruments, including systems associated with DTS-HD Blu-ray playback. A 0.4 MHz maximum modulation frequency provides the timing headroom required by the device's specified PWM output architecture.
Technically, the TAS5558DCA is designed around two separate ASRC modules rather than one shared converter. Each module processes four channels, allowing up to eight channels to be supported concurrently. This modular channel organization can simplify system partitioning when comparing input sample rates, but it does not eliminate the need to verify supported formats, clocking, and configuration details in the manufacturer documentation.
Typical uses include Blu-ray home-theater-in-a-box amplifiers, multi-channel digital audio power stages, powered speakers, and consumer audio systems requiring eight PWM channels. The processor is most appropriate where digital signal processing, sample-rate conversion, and class-D-style PWM modulation must be integrated into a compact design.
Designers should preserve the exposed-pad thermal and layout requirements of the HTSSOP package and verify all digital audio interfaces against the manufacturer datasheet. Because several electrical, timing, and pin-level details are not present in the supplied source excerpts, those values must be confirmed in the full Texas Instruments technical documentation before layout release.
This page consolidates the verified channel count, package, temperature range, PWM frequency, source links, procurement information, and engineering limitations for TAS5558DCA. It also distinguishes verified facts from missing datasheet parameters, helping engineers evaluate the device without mistaking generic audio-IC characteristics for guaranteed TAS5558DCA specifications.
드롭인 대체품: TAS5558DCA — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 제품에는 사용 가능한 드롭인 대체품이 없습니다.
대체품 요청TAS5558DCA 사양
| Product Type | 8-channel HD-compatible digital audio processor |
| Audio Processing Channels | 8 channels |
| Output Architecture | Digital pulse-width modulation output |
| Maximum Modulation Frequency | 0.4 MHz |
| Sample-Rate Converter Architecture | 2 separate modules, each handling 4 channels |
| Maximum Supported Channels | Up to 8 channels |
| Digital Audio Processing | Integrated digital audio processing |
| Sample-Rate Conversion | Integrated asynchronous sample-rate converter |
| Target Application | DTS-HD specification Blu-ray HTiB applications |
| 패키지 | HTSSOP (DCA), 56 pins |
| Package Body Width | 6.10 mm |
| Package Body Length | 0.240 in |
| Exposed Pad | Present |
| 동작 온도 범위 | -40 °C to 85 °C |
| Mounting Technology | Surface mount |
TAS5558DCA 0.240 in 핀 구성 가이드
TAS5558DCA(0.240 in 패키지)의 핀 구성입니다. 핀 번호, 기능, 연결 다이어그램은 제조사 데이터시트에 정의되어 있습니다. 정확한 풋프린트와 솔더링 지침은 해당 문서를 참조하십시오.
다음에 대한 상세 핀아웃 데이터 없음: TAS5558DCA.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
TAS5558DCA 적합 용도: 6 애플리케이션s: Blu-ray Home-Theater-in-a-Box Amplifier, Powered Multi-Channel Speaker, Digital Audio Preprocessing Head, Home Theater Audio Processor, Digital Speaker Amplifier Controller, Compact Consumer Audio System.
Blu-ray Home-Theater-in-a-Box Amplifier
The TAS5558DCA fits an HD-compatible Blu-ray HTiB amplifier because it integrates eight digital audio processing channels, two four-channel sample-rate converter modules, and PWM output in one device. Texas Instruments explicitly identifies DTS-HD Blu-ray HTiB applications as a design target, while the verified 0.4 MHz maximum modulation frequency defines the modulator timing capability. An eight-channel implementation can simplify signal routing between digital source processing and downstream power stages. The designer must still confirm supported input formats, sample-rate combinations, clocks, control requirements, and PWM integration from the full datasheet before finalizing the signal chain.
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Powered Multi-Channel Speaker
The TAS5558DCA can serve as the central digital audio processor in a powered speaker or compact home-theater system requiring eight output channels. Its two independent four-channel ASRC modules support parallel channel handling, while integrated digital processing avoids implementing equivalent operations as separate logic. The PWM outputs can feed suitable downstream amplification stages, reducing digital signal routing complexity. The 56-pin HTSSOP package with an exposed pad requires careful PCB layout and thermal management. Firmware, synchronization, unsupported-format behavior, and amplifier-interface requirements must be verified against the official documentation for each product configuration.
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Digital Audio Preprocessing Head
The TAS5558DCA is appropriate for a digital audio preprocessing head that must combine eight-channel processing, sample-rate conversion, and PWM generation. Its separate four-channel ASRC modules allow the converter resources to be organized across eight channels, which can simplify balanced left-right and surround-channel architecture. The verified operating range of -40 °C to 85 °C supports industrial and commercial equipment designs, subject to enclosure temperature and thermal verification. A robust implementation should preserve the exposed-pad copper connection, provide clean digital and analog supplies, and follow the manufacturer’s recommended clocking and layout topology.
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Home Theater Audio Processor
The TAS5558DCA aligns with a home-theater audio processor requiring eight channels and HD-compatible source handling. Texas Instruments specifically describes the device for DTS-HD specification Blu-ray HTiB applications, making it more relevant than a generic eight-channel modulator for that established use case. Integrated sample-rate conversion can support system-level rate adaptation when paired with compatible digital audio streams. The design team must match supported channel layouts and sample rates, account for control firmware, and validate synchronization between all eight PWM outputs. Appropriate output filtering and downstream amplifier design also remain necessary for a complete loudspeaker signal path.
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Digital Speaker Amplifier Controller
The TAS5558DCA can control a digital speaker-amplifier subsystem where eight PWM channels originate from a common digital audio processor. Centralizing channel processing and sample-rate conversion reduces the need for separate digital conversion blocks for every output. Its maximum modulation frequency of 0.4 MHz provides a defined limit that must be reconciled with amplifier switching requirements, filter design, and output signal integrity. Before using the device in a new topology, verify logic levels, clock sources, data formats, PWM polarity, and startup behavior. PCB implementation also needs the exposed-pad thermal path and short, controlled digital return routing.
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Compact Consumer Audio System
The TAS5558DCA can support compact consumer audio systems that consolidate eight-channel digital processing, sample-rate conversion, and PWM generation into one IC. This integration may reduce the number of separate processing components in a home-theater-in-a-box design while keeping channel timing under one controller. The exposed-pad HTSSOP package is well suited to surface-mount assembly, although its heat flow depends on copper area, thermal vias, board layers, and ambient conditions. The verified operating range of -40 °C to 85 °C is useful for product planning, but final compliance depends on the assembled enclosure and the verified worst-case dissipation of the complete design.
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엔지니어링 참조 데이터: TAS5558DCA — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
주요 차별점
- Purpose-built eight-channel HD audio processing (vs TAS5601DCA)
- Parallel sample-rate converter organization (vs TAS5601DCA)
- Defined modulator frequency capability (vs TAS5601DCA)
설계 노트
Treat the DCA exposed pad as a mandatory thermal and electrical feature. Use the Texas Instruments recommended land pattern, maintain solderable thermal-via geometry, and provide uninterrupted copper from the pad to the ground structure. Validate junction temperature with the actual board stack-up, enclosure, and neighboring heat sources; the supplied excerpts do not provide the device’s thermal-resistance rating.
Complete the 56-pin HTSSOP layout from the official package drawing before routing audio, clock, control, supply, and PWM nets. Keep high-current digital return paths compact and continuous, place decoupling capacitors according to the manufacturer reference circuit, and avoid splitting the exposed-pad ground plane. Do not infer pin functions from the high-level block description.
Validate clock, serial-data, and PWM timing against the slowest supported interface condition, including cable or PCB loading. Confirm source impedance, termination requirements, data polarity, and PWM output configuration from the manufacturer documentation. The 0.4 MHz maximum modulation frequency is a verified limit, but it does not by itself specify every edge-rate or routing constraint.
Do not treat TAS5601DCA as a drop-in replacement merely because both parts use the DCA designation. Confirm package dimensions, exposed-pad construction, every pin function, supply requirements, supported sample rates, audio formats, control registers, and PWM timing before considering any alternate MPN. The supplied search results establish only a comparison relationship, not drop-in equivalence.
규정 준수 정보
The supplied source excerpts do not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals compliance. AEC-Q100 is not applicable based on the identified consumer and home-theater audio application, but this field does not replace formal qualification review.
