STA308A - 8-Channel 24-Bit Digital Audio Processor | STMicroelectronics
Référence : STA308A ✗ Fin de vie| Qté | Prix unitaire | Total |
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| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1 000 | $0 | $0,00 |
STA308A Présentation
A digital audio processor is a specialized signal-processing IC that receives digital audio streams, applies configurable channel processing and volume control, and produces digital outputs for downstream converters or power stages. Within the broader hierarchy, the STA308A belongs to audio special-purpose ICs, digital signal processors, multichannel audio ICs, and power-management-dependent amplification systems. Its DDX outputs allow an external DDX power device to complete an all-digital Class-D-style amplification chain.
The principal features include eight 24-bit DDX channels, greater-than-100-dB SNR and dynamic range, sample-rate selection from 32 kHz through 192 kHz, and six DSD/SACD inputs. I2C control simplifies configuration of device addressing and digital gain or attenuation. These functions make the device suitable for DVD, home-theater, active-speaker, digital mixing, and multi-zone audio systems where several decoded channels must be routed and level-controlled centrally.
Technically, the STA308A separates digital signal processing from analog power amplification. Its digital outputs can connect to compatible DDX power devices, reducing the need for conventional analog volume-control paths and allowing attenuation to remain in the digital domain. This architecture can improve channel integration and simplify control software, but system performance also depends on the selected power device, power-supply design, output filtering, clocking, and PCB signal integrity.
Typical uses include 5.1- and 7.1-channel surround systems, powered speakers, DVD receivers, digital active loudspeakers, and compact audio hubs. The 10 mm square TQFP package supports conventional surface-mount assembly, although careful decoupling and short high-speed routing remain essential. The supplied source material does not state supply voltage, clock limits, output logic levels, or thermal resistance.
Designers should confirm all logic levels, supported digital interfaces, DDX power-device requirements, and external component values against the manufacturer datasheet. Because the verified excerpts emphasize processing rather than exact pin assignments, engineers should use the official PDF for the complete 64-pin connection table rather than infer unused pins. Distributor pricing and lifecycle status were not provided, so purchasing requires a current quote and availability check.
This page consolidates verified manufacturer capabilities, distributor identification, sourcing guidance, and design cautions for the STA308A. It distinguishes confirmed functions from missing electrical details and avoids presenting unverified alternatives as drop-in replacements.
Alternatives de remplacement direct pour STA308A — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
Aucune alternative de remplacement direct disponible pour ce produit.
Demander des alternativesSTA308A Valeurs maximales et caractéristiques électriques
| Product Type | Multichannel digital audio processor with DDX |
| DDX Output Channels | 8 channels |
| DDX Processing Resolution | 24-bit |
| Signal-to-Noise Ratio | >100 dB |
| Dynamic Range | >100 dB |
| Selectable Input Sample Rates | 32 kHz to 192 kHz |
| DSD/SACD Input Channels | 6 channels |
| Control Interface | I2C |
| Selectable Device Address | Yes |
| Digital Gain or Attenuation | Supported |
| Boîtier | 64-TQFP, 10 mm x 10 mm |
| Terminal Count | 64 terminals |
| Type de montage | Surface mount |
| Catégorie | Audio Special Purpose / Audio Fully Integrated Processor |
Guide de configuration des broches du STA308A 64-tqfp, 10 mm x 10 mm
Configuration des broches du STA308A (boîtier 64-tqfp, 10 mm x 10 mm). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour STA308A.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
STA308A convient pour 6 applications: Multichannel Home-Theater Processor, Powered Speaker Network, DVD and Disc-Based Audio Hub, Digital Active Loudspeaker, Multi-Zone Residential Audio, Digital Recording and Broadcast Monitor.
Multichannel Home-Theater Processor
The STA308A fits a home-theater signal path where decoded surround channels require centralized routing and digital level control. Its eight 24-bit DDX channels provide ample channel capacity, while six DSD/SACD input channels and sample rates from 32 kHz through 192 kHz support modern high-resolution sources. An I2C-controlled system can adjust gain or attenuation across speakers without placing potentiometers in every analog output path. The processor should sit upstream of compatible DDX power devices, with clocking, grounding, and output filtering implemented exactly as required by the manufacturer documentation.
Recommandé
Powered Speaker Network
A powered-speaker network can use the STA308A to process multiple digital channels centrally and distribute them to DDX amplification stages. Eight 24-bit channels and digital gain or attenuation are useful when several drivers or listening zones require coordinated level control. The 10 mm square 64-TQFP also supports compact speaker electronics, although the selected power devices and passive crossover networks remain essential. Firmware should match the supported sample rates, and I2C configuration must prevent simultaneous device-address conflicts among multiple processors.
Recommandé
DVD and Disc-Based Audio Hub
The STA308A is applicable to DVD, disc-player, and source-device designs that must decode and control multiple audio channels in a compact assembly. Its support for six DSD/SACD inputs and selectable sampling from 32 kHz to 192 kHz accommodates high-resolution source routing, while eight DDX outputs provide separate channels for downstream amplification. The greater-than-100-dB signal-to-noise ratio and dynamic range stated by the manufacturer make low-noise digital level control relevant to this use. Firmware and clocking must still be validated with the exact source interface and DDX power stage.
Recommandé
Digital Active Loudspeaker
In a digital active loudspeaker, the STA308A can perform channel processing and attenuation before digital power amplification. This removes long analog volume-control paths and allows volume commands to be issued through I2C from a central controller. Eight 24-bit DDX channels can support multiway speakers with separate woofer, midrange, and tweeter channels when the amplifier architecture supplies enough outputs. Actual crossover processing, protection, latency, and output filtering must be designed for the selected drivers; the verified excerpt does not identify a complete loudspeaker reference circuit.
Recommandé
Multi-Zone Residential Audio
The STA308A can support a multi-zone audio controller when each zone requires independently adjustable digital output channels. Eight DDX channels and I2C-selected addressing allow controlled integration into centralized systems, while digital gain or attenuation simplifies volume commands from a wall controller, receiver, or network interface. The device is most suitable where clean digital routing is preferred over distributed analog pots. Firmware must implement channel mapping, mute behavior, startup sequencing, and zone limits, and the complete amplifier chain must preserve the processor's required clock and signal levels.
Recommandé
Digital Recording and Broadcast Monitor
The STA308A can serve as a central digital audio processor in recording, broadcast, or monitoring equipment that needs multiple synchronized outputs. Its eight 24-bit channels, greater-than-100-dB dynamic-range specification, and selectable high sample rates make it relevant to quality-conscious routing and gain-control systems. Because it is an Audio Special Purpose device rather than a general-purpose converter, external ADC and DAC circuitry may still be necessary. Engineers must verify supported clocks, latency, channel mapping, digital attenuation behavior, and output-device compatibility in the manufacturer datasheet.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STA308A — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit |
|---|---|
| Brand | STMicroelectronics |
| Package | 64-TQFP, 10 mm x 10 mm |
| Product Type | Multichannel digital audio processor with DDX |
| DDX Output Channels | 8 channels |
| Processing Resolution | 24-bit |
| Signal-to-Noise Ratio | >100 dB |
| Dynamic Range | >100 dB |
| Input Sample Rates | 32 kHz to 192 kHz |
| DSD/SACD Input Channels | 6 channels |
| Control Interface | I2C with selectable device address |
Principaux différenciateurs
- Eight-channel DDX integration (vs STA308)
- High-resolution multichannel processing (vs Generic multichannel audio processor)
- High-resolution-source input capacity (vs Non-DSD digital audio processors)
- Digital attenuation architecture (vs Processor plus analog attenuator architecture)
Notes de conception
Use the official 64-TQFP pin table before laying out the PCB. Place all required bypass capacitors at their specified power pins, keep DDX and clock traces short, provide a continuous return path beneath the device where the footprint permits, and isolate high-current switching outputs from sensitive audio lines. The verified material confirms the 10 mm by 10 mm TQFP but does not provide exact stack-up or escape-routing guidance, so those details must come from the manufacturer datasheet.
Treat clock, audio-data, and DDX outputs as high-speed digital nets even though the source material does not state their voltage levels. Match trace lengths where the supported interface requires it, minimize stub lengths, avoid right-angle routing, and observe the manufacturer interface topology. Validate timing with the final power-device loading and grounding arrangement because a functional bench setup does not guarantee compliance in a populated multichannel system.
Do not assume that a generic 64-pin audio IC or a similarly named STA308 is pin-compatible. DDX outputs, clocks, supplies, I2C signals, and grounds must match by pin number and electrical specification. The supplied cross-reference evidence contains no confirmed replacement, so changing suppliers requires a complete pinout, timing, power, and firmware review rather than reliance on package dimensions alone.
Separate processor and power-stage domains as far as practical. Keep switching-node copper away from DDX inputs, clock lines, and references; route power and ground returns directly to their intended pins without narrow shared segments. Digital volume control cannot prevent switching-node noise entering elsewhere in the amplifier, so output filtering, power-supply design, grounding, and shielding remain part of the audio performance budget.
Informations de conformité
The supplied verified excerpts do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Compliance must be confirmed from the current manufacturer product documentation.
