STA304A - 6-Channel Digital Audio Processor | STMicroelectronics
N.º da peça: STA304A ✗ Fim de vidaSTA304A Visão geral
A digital audio processor is a specialized integrated circuit that receives, processes, and distributes digital audio signals within an audio system. In the broader product hierarchy, the STA304A is an audio processor, which is a form of audio special-purpose IC and therefore part of the wider semiconductor and signal-processing ecosystem. Its I2C interface supports control and configuration, while its I2S interface supports serialized digital audio data transfer.
The STA304A provides six digital audio channels in one integrated device. This channel count allows one processor to coordinate multichannel audio routing and processing rather than requiring a separate discrete solution for each channel. Its 3 V to 3.6 V operating supply range allows integration into compatible 3.3 V audio equipment. The 44-TQFP surface-mount package provides a compact solution for multichannel consumer audio products.
The device combines digital audio processing, control connectivity, and multichannel interface functionality in a single package. According to the verified STMicroelectronics product information, its supported interfaces are I2C and I2S. I2C is useful for configuration and register access, while I2S carries digital audio samples between the processor and codecs, amplifiers, converters, or other digital audio endpoints.
Typical uses include active speakers, multichannel home-audio equipment, digital mixing equipment, and other consumer audio systems that require centralized multichannel processing. In an I2S audio path, the STA304A can sit between a digital audio source and one or more audio codecs. The supplied product information does not specify sample rate, processing latency, channel mapping, or output-routing details, so those characteristics must be confirmed in the manufacturer datasheet before design release.
Engineers should pay particular attention to the obsolete lifecycle status and validate interface timing, power sequencing, and channel assignment against the manufacturer documentation. Because the verified information identifies the part as obsolete, boards requiring long-term availability may need an approved redesign rather than a routine procurement substitution. Any replacement should be evaluated for package, pinout, supply voltage, I2C behavior, and I2S signal compatibility.
This product record combines verified distributor and manufacturer-linked information with practical sourcing, design, and replacement guidance. It distinguishes confirmed STA304A characteristics from parameters that remain unavailable, helping engineers make informed decisions without treating an unverified alternative as a guaranteed drop-in replacement.
Alternativas drop-in para STA304A — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com STA304A (mesmo formato e footprint) — diferindo em Package, Product Type, Number of Channels, Primary Application.
STA308A
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →STA309A
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →STA310
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →STA306A
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
STA307A
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
STA304A Classificações máximas e características elétricas
| Product Type | Audio Fully Integrated Processor |
| Product Series | DDX |
| Number of Channels | 6 channels |
| Control Interface | I2C |
| Audio Interface | I2S |
| Supply Voltage Range | 3 V to 3.6 V |
| Temperatura de operação | -20 °C to +125 °C (junction temperature) |
| Encapsulamento | 44-TQFP, 10 mm x 10 mm |
| Tipo de montagem | Surface Mount |
| Status do ciclo de vida | Obsolete |
| Processor Architecture | Fully Integrated Processor |
| Primary Application | Pre-Amplifier |
| Direct Digital Technology | Direct Digital |
Guia de Configuração de Pinos do STA304A 44-tqfp, 10 mm x 10 mm
Configuração de pinos para STA304A (pacote 44-tqfp, 10 mm x 10 mm). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para STA304A.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
STA304A é adequado para 6 aplicaçãos: Multichannel Active Speaker System, Digital Audio Pre-Amplifier, Home-Theater Audio Processor, Digital Mixing and Routing Console, Digital Speaker Amplifier Front End, Consumer Audio System Continuity Design.
Multichannel Active Speaker System
The STA304A fits a multichannel active-speaker architecture because it combines six digital audio channels with I2S data connectivity in a 3 V to 3.6 V design. Place it between the system’s digital audio source and the relevant codecs or amplifier channels, using I2C for configuration and I2S for serialized audio transfer. The 44-TQFP 10 mm by 10 mm package supports compact board placement, although verify actual routing and synchronization behavior against the manufacturer datasheet. Because the part is obsolete, this application is best suited to maintaining an existing product or using confirmed residual inventory rather than launching a new long-life consumer platform.
Recomendado
Digital Audio Pre-Amplifier
The STA304A is identified as a pre-amplifier-class fully integrated processor, making it relevant to digital pre-amplifier and volume-control designs. Its six-channel architecture can support multichannel routing in a single processor, while I2C provides a control path for configuration and I2S provides the digital audio path. The 3 V to 3.6 V supply range aligns with compatible 3.3 V system rails. Before replacing the original processor in an existing pre-amplifier, confirm channel mapping, register compatibility, I2S clocking, and boot behavior; the verified excerpts do not specify routing details or processing latency.
Recomendado
Home-Theater Audio Processor
The STA304A’s six-channel processing capability and I2S interface make it applicable to centralized home-theater signal routing, provided the source, codec, and amplifier architecture use compatible digital audio formats. I2C can carry control traffic between the processor and system configuration logic, while I2S transfers multichannel samples. Its 44-TQFP package keeps the device compact, and the stated -20 °C to +125 °C junction-temperature range supports environmental planning. For new home-theater products, confirm sample rate, channel roles, latency, and clock topology in the datasheet and account for the obsolete lifecycle status when planning service supply.
Recomendado
Digital Mixing and Routing Console
The STA304A can serve as the central digital-audio processing element in a compact mixing or routing system because it combines a six-channel processor with separate I2C control and I2S audio interfaces. The control interface can connect to a host controller, while the I2S interface connects to converters, codecs, or amplifiers. Its 3 V to 3.6 V operating range supports compatible low-voltage digital designs, and the 44-TQFP package provides a surface-mount footprint for multi-channel boards. Actual suitability depends on the required routing matrix, synchronization topology, and signal formats, none of which are quantified in the supplied source excerpts.
Recomendado
Digital Speaker Amplifier Front End
The STA304A is suitable for a digital speaker-amplifier front end when the design requires centralized six-channel digital processing before conversion to analog or power-amplifier stages. I2S can carry digital audio into the processing chain, and I2C can provide configuration access from the main controller. The 3 V to 3.6 V supply range is compatible with many 3.3 V audio subsystems, while the 44-TQFP package limits board area relative to larger discrete arrangements. Verify I2S data format, clock ratios, channel order, and startup timing against the manufacturer documentation before modifying a production amplifier design.
Recomendado
Consumer Audio System Continuity Design
The STA304A is most defensible in a consumer-audio continuity design that already contains the device and can obtain verified residual inventory. Its six channels, I2C configuration interface, and I2S audio interface preserve the architecture of the original product without requiring immediate functional redevelopment. Procurement should focus on authorized-source traceability, date code, and lot consistency because the device is obsolete. Engineering should also preserve a documented baseline for I2C registers, I2S routing, and supply sequencing so that any incoming part can be screened for functional equivalence rather than relying only on the manufacturer name and package designation.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para STA304A — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | STA308A | STA309A | STA310 | STA306A | STA307A |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 44-TQFP (10x10) | 44-TQFP (10x10) | 44-TQFP (10x10) | 44-TQFP (10x10) | 44-TQFP (10x10) | 44-TQFP (10x10) |
| Product Type | Audio Fully Integrated Processor | DDX-family audio processor | DDX-family audio processor | DDX-family audio processor | DDX-family audio processor | DDX-family audio processor |
Principais diferenciais
- Verified six-channel integration (vs STA308A)
- Confirmed dual-interface architecture (vs STA309A)
- Documented supply-voltage range (vs STA310)
Notas de projeto
Do not treat the STA304A as a generic 44-pin TQFP or assume that another STMicroelectronics audio processor is pin-compatible. The verified information confirms a 44-TQFP 10 mm by 10 mm package but does not provide the complete pin table. Before substitution, compare every power, ground, I2C, I2S, clock, reset, and control signal against the manufacturer datasheet and confirm the PCB land pattern, exposed-pad treatment, and pin-1 orientation.
Design the power rail for the verified 3 V to 3.6 V operating range and verify the datasheet’s internal rail, absolute-maximum, startup, and decoupling requirements before layout. Place the required input and output capacitors directly at the associated supply pins, keep high-current return paths short, and provide a low-impedance ground reference for the digital audio device. Do not infer a stable 3.3 V rail solely from the advertised operating range without checking sequencing and tolerance.
Treat I2S and I2C as potentially timing-sensitive interfaces even though the supplied excerpts do not specify edge rates or frequency limits. Route clock and data lines with continuous reference planes, avoid stubs and unnecessary vias, and keep switching regulators and their high-current paths away from audio interfaces. The exact topology depends on the source, sink, codec, and system clock arrangement, so follow the manufacturer’s recommended application and pin descriptions.
The lifecycle status creates a larger risk than an ordinary component swap. The part is obsolete, and residual marketplace inventory may contain mixed date codes or parts from different production periods. Require authorized-source documentation, traceability, electrical screening, and firmware compatibility testing. For long-lived products, obtain a written last-time-buy or approved-redesign decision rather than allowing an unreviewed substitute to enter the BOM.
Informações de conformidade
The supplied verified sources do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. Compliance must be confirmed from the current manufacturer declaration or product page before qualification.
