STA308 - 8-Channel Digital Audio Processor | STMicroelectronics
Référence : STA308 ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $9.1046 | $9,10 |
| 10 | $9.1046 | $91,05 |
| 100 | $9.1046 | $910,46 |
| 500 | $9.1046 | $4 552,30 |
| 1 000 | $9.1046 | $9 104,60 |
STA308 Présentation
A digital audio processor is a specialized signal-processing IC that receives digital audio streams, applies channel control and volume functions, and drives digital amplification stages. Within the hierarchy of digital signal processing, it belongs to the DSP and audio-special-purpose IC categories. Its DDX outputs support high-efficiency all-digital amplification when paired with compatible DDX power devices.
The STA308 provides eight 24-bit DDX channels and digital volume control in 0.5 dB steps. The verified source material specifies variable digital gain up to 24 dB in 0.5 dB steps, digital limiter functionality, and input sample-rate support from 32 kHz through 192 kHz. An I2C interface is identified in the available technical data, while the remaining control, clock, data, and DDX signal assignments require the manufacturer pin table for implementation.
This processor targets multichannel consumer-audio systems where digital signal routing, per-channel gain, limiting, and direct digital amplification are useful. Relevant system roles include powered speakers, active soundbars, compact home-theater amplification, digital mixer output conditioning, and multi-zone powered-speaker control. The DDX architecture eliminates a conventional analog power-amplifier input stage when the associated external power devices and firmware are compatible.
Designers should treat the STA308 as part of a tightly coupled digital audio subsystem rather than a standalone codec. The 2.3 V to 2.7 V operating range requires a stable low-noise supply, and all 64 package terminals must be connected or intentionally configured exactly as shown in the manufacturer datasheet. Audio-clock, serial-data, DDX output, control, ground, and decoupling layouts should preserve signal integrity and adequate return paths.
This page combines verified manufacturer and distributor information with practical selection guidance. Pricing reflects the supplied LCSC listing as of 2026-10-23, while lifecycle, detailed electrical limits, complete pin assignments, and true drop-in replacements remain constrained by the available evidence.
Alternatives de remplacement direct pour STA308 — 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 alternativesSTA308 Valeurs maximales et caractéristiques électriques
| Product Type | Fully integrated multichannel digital audio processor |
| Number of DDX Channels | 8 channels |
| DDX Processing Resolution | 24 bit |
| Input Sample-Rate Support | 32 kHz to 192 kHz |
| Digital Volume Step | 0.5 dB |
| Variable Digital Gain | 24 dB in 0.5 dB steps |
| Digital Limiter | Supported |
| Minimum Operating Voltage | 2.3 V |
| Maximum Operating Voltage | 2.7 V |
| Control Interface | I2C |
| Package Type | 64-terminal LFQFP |
| Package Dimensions | 10 mm x 10 mm |
| Terminal Count | 64 terminals |
| Type de montage | Surface mount |
| Amplification Output Capability | DDX direct digital amplification outputs |
Guide de configuration des broches du STA308 10 mm x 10 mm
Configuration des broches du STA308 (boîtier 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 STA308.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
STA308 convient pour 6 applications: Powered Speaker Amplification, Digital Active Soundbar, Multichannel Home-Theater Amplifier, Digital Mixer Output Conditioning, Multi-Zone Audio Control, Compact Digital Audio Amplifier.
Powered Speaker Amplification
The STA308 fits an eight-channel powered-speaker design because it provides 8 DDX outputs, 24-bit processing, and digital volume control in 0.5 dB steps. It can receive digital audio streams, apply per-channel gain and limiter functions, and send DDX signals to compatible external power devices. Supporting sample rates from 32 kHz to 192 kHz accommodate conventional and high-resolution sources, while the 2.3 V to 2.7 V processor supply should be isolated cleanly from power-stage routing. Verify external DDX device matching, clocking, thermal margins, and firmware configuration before production release.
Recommandé
Digital Active Soundbar
A digital soundbar can use the STA308 as its central multichannel audio processor when it requires eight digitally controlled amplification channels. The processor supports 32 kHz through 192 kHz input rates and digital gain up to 24 dB in 0.5 dB increments, which enables system-level volume calibration and limiter control. The integration reduces the need for separate digital volume processors, but channel routing and amplifier selection remain critical. Keep audio clocks and DDX outputs away from switching-node currents, and validate thermal performance across every channel simultaneously.
Recommandé
Multichannel Home-Theater Amplifier
The STA308 aligns with multichannel home-theater amplification because eight 24-bit DDX channels can organize surround-sound processing into a digitally controlled signal path. Input sample rates from 32 kHz to 192 kHz cover common source formats, and the 0.5 dB volume increments support calibrated listening levels across compatible channels. A practical implementation still requires the correct DDX power-device topology, stable low-noise core supply, and uninterrupted audio-clock routing. Firmware must confirm channel mapping, gain limits, limiter behavior, and mute behavior before amplifier calibration.
Recommandé
Digital Mixer Output Conditioning
The STA308 can serve as an output-conditioning and control processor for a digital mixer feeding compatible amplification channels. Its digital gain controls extend to 24 dB in 0.5 dB steps, and the integrated limiter functionality supports disciplined level control in multichannel playback systems. The 2.3 V to 2.7 V supply range calls for a dedicated regulator section with local high-frequency decoupling. Use clean digital grounding, separate sensitive analog or reference returns where recommended, and verify all DDX mappings against the mixer routing plan.
Recommandé
Multi-Zone Audio Control
The STA308 can implement centralized digital gain and limiter control for multi-zone audio when eight independent DDX channels match the system's routing needs. Digital volume increments of 0.5 dB help engineers establish repeatable zone calibration, while support for input rates up to 192 kHz preserves compatibility with high-resolution sources. The implementation must account for synchronization across zones, per-channel delays, fault response, and mute sequencing. Firmware should be tested under maximum gain to prevent limiter or thermal overload in the downstream power devices.
Recommandé
Compact Digital Audio Amplifier
The STA308 is appropriate for a compact digital audio amplifier architecture that combines a digital control core with external DDX power devices. Eight 24-bit output channels can reduce discrete digital volume and control complexity, while the 64-terminal LFQFP package supports a dense multichannel layout. Density introduces routing constraints: DDX nets must remain short, clock lines must be controlled-impedance, and supply returns must avoid power-stage switching currents. The processor's 2.7 V maximum core voltage must be respected with accurate regulation and transient margin.
Recommandé
Données de référence d'ingénierie pour STA308 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit |
|---|---|
| Brand | STMicroelectronics |
| Package | 64-terminal LFQFP, 10 mm x 10 mm |
| DDX Channels | 8 channels |
| Processing Resolution | 24 bit |
| Input Sample Rate | 32 kHz to 192 kHz |
| Supply Voltage | 2.3 V to 2.7 V |
| Control Interface | I2C |
| Digital Gain | 24 dB in 0.5 dB steps |
| Limiter Function | Digital limiter supported |
| Verified Unit Price | $9.1046 as of 2026-10-23 |
Principaux différenciateurs
- Integrated eight-channel DDX output capability (vs Discrete digital volume processors)
- Broad verified input-rate range (vs Rate-restricted audio paths)
- Fine-grained digital gain and volume control (vs Coarse fixed-gain control)
Notes de conception
Treat DDX outputs, audio clocks, serial data, control signals, and quiet analog references as separate routing groups. Keep the processor and external DDX power devices physically close enough for controlled routing, but prevent switching-node currents from passing beneath the audio processor ground area. Use short, continuous return planes and follow the complete reference design and pin-specific guidance in the STMicroelectronics datasheet.
The STA308 operates from 2.3 V to 2.7 V, so its core supply must remain inside that range under startup, audio activity, and fault recovery. Place local high-frequency decoupling at the relevant supply pins and provide a low-impedance return to the quiet ground structure. Estimated budget: allowance and transient design are application-specific and require measured rail behavior; no unverified supply-current or capacitor values are assigned here.
Do not substitute the STA308A merely because both products are described as multichannel DDX processors. Confirm mechanical dimensions, all 64 terminal assignments, electrical limits, clocking, control registers, DDX timing, and boot or firmware behavior before replacement. A same-family function description does not establish drop-in compatibility, PCB-level interchangeability, or system equivalence.
Validate clock jitter, data setup and hold margins, channel skew, and DDX output timing at the highest supported sample rate of 192 kHz. Use measurement-probe access that does not materially disturb small-signal nodes, and test the full sequence from idle through maximum digital gain. Poor clock or data routing can create channel misalignment or limiter behavior that is difficult to diagnose from audio output alone.
Informations de conformité
The supplied product, datasheet-search, and distributor data do not provide explicit compliance declarations for the STA308.
