AK7738VQ - 64-LQFP Multi-DSP Audio Processor | AKM
Référence : AK7738VQ ✗ Fin de vieAK7738VQ Présentation
A digital signal processor, or DSP, is a specialized semiconductor that executes mathematical operations on digitized signals. Audio DSPs commonly handle effects, mixing, channel conversion, sampling-rate translation, voice processing, and signal conditioning. The AK7738VQ belongs to the DSP hierarchy that combines programmable audio processing with high-performance analog-to-digital and digital-to-analog converters, allowing a system to reduce the number of separate conversion and processing components.
The principal features identified for this part are its multi-DSP architecture, five ADC channels, four DAC channels, eight sample-rate converter channels, floating-point processing, and 48 kHz operating class. These resources allow several audio paths to be combined in one package. The 64-LQFP surface-mount package also provides a defined, inspectable lead arrangement for conventional PCB assembly, although the package has more pins than many compact audio converters.
The AK7738 architecture is designed to bridge digital audio data and real-world analog signals. ADC channels capture incoming audio for digital processing, while DAC channels provide processed digital audio as analog output. Sample-rate conversion supports interoperability between systems operating at different sampling rates. This combination is useful when an equipment designer wants a single audio subsystem rather than separate converters, sample-rate converters, and external processing devices.
Typical uses include multichannel digital audio equipment, voice and hands-free communication systems, sound-field processors, active speaker electronics, consumer audio receivers, and embedded audio-control products. The integration is particularly relevant when several channels must be converted or synchronized and when board area or component count matters. Firmware and signal-flow configuration must be developed around the device's supported audio interfaces and application requirements.
Layout should treat the analog converter paths, digital interfaces, supply rails, and ground return as separate concerns. Place decoupling capacitors adjacent to the relevant supply pins, maintain short return paths, and follow the manufacturer's recommended reference layout and component values. Verify clock, interface levels, and supported sampling conditions against the manufacturer datasheet before releasing a PCB.
This product page organizes the available AK7738VQ architecture, package, pricing-source, and engineering information. It also distinguishes verified drop-in candidates from functionally similar audio processors so that board-level replacement decisions are based on package and pin compatibility rather than feature similarity alone.
Alternatives de remplacement direct pour AK7738VQ — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
AK7738
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AK7738VQ Valeurs maximales et caractéristiques électriques
| Device Type | Floating-point digital signal processor (DSP) |
| Architecture | Multi-DSP |
| Maximum Stated Sample Rate | 48 kHz |
| ADC Channels | 5 channels |
| DAC Channels | 4 channels |
| Sample-Rate Converter Channels | 8 channels |
| DSP Data Format | 32-bit floating point |
| Package Type | 64-pin LQFP |
| Package Dimensions | 10 x 10 mm |
| Type de montage | Surface mount |
| Processor Type | RAM-based programmable DSP |
| Integrated Functions | 5-channel ADC, 4-channel DAC, and 8-channel sample-rate conversion |
| Primary Function | Digital audio processing and signal conversion |
Guide de configuration des broches du AK7738VQ 10 x 10 mm
Configuration des broches du AK7738VQ (boîtier 10 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 AK7738VQ.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
AK7738VQ convient pour 6 applications: Multichannel Digital Audio Processing, Voice and Hands-Free Communication, Active Speaker and Soundbar Electronics, Digital Audio Recording and Playback, Sound Effects and Acoustic Processing, Professional and Studio Audio Interfaces.
Multichannel Digital Audio Processing
The AK7738VQ fits multichannel digital audio designs because it combines a multi-DSP architecture with 5 ADC channels, 4 DAC channels, and 8 sample-rate-converter channels in one 64-LQFP device. Its 32-bit floating-point processing supports programmable audio effects and signal transformations without requiring a separate processor for each path. At the stated 48 kHz class, it is relevant to equipment that accepts several analog audio inputs and produces processed digital-audio outputs. Integration can simplify the signal chain, but the firmware must define channel routing, synchronization, gain, and filter behavior. Use the manufacturer application diagrams to validate converter, clock, and digital-interface requirements before finalizing the PCB.
Recommandé
Voice and Hands-Free Communication
The AK7738VQ is appropriate for voice and hands-free systems that require analog capture, programmable signal processing, and audio regeneration in one device. Its RAM-based DSP can execute user-defined acoustic processing, while the 5 ADC and 4 DAC channels provide the basic conversion resources for microphone-oriented and playback paths. The eight sample-rate-converter channels can assist when connected digital-audio domains operate at different rates. In a real product, designers should separate microphone input conditioning from speaker output routing and control gains to prevent clipping. Verify supported clock modes, serial-audio formats, and the required processing-memory allocation in the manufacturer documentation before assigning fixed signal-flow functions.
Recommandé
Active Speaker and Soundbar Electronics
The AK7738VQ can serve as the processing and conversion hub in active speakers, soundbars, and other powered-audio products. Its integrated ADC channels accept analog source signals, the floating-point DSP applies user-programmable effects, and the DAC channels create processed analog outputs for downstream amplifiers. This integrated arrangement can reduce the number of separate conversion devices and simplify synchronized control of volume, tone, and channel routing. The 48 kHz operating class suits conventional consumer-audio streams, while eight sample-rate-converter channels support rate translation where required. Board planning should reserve short analog paths, low-impedance supply decoupling, and clean clock distribution so converter performance is not undermined by noisy PCB routing.
Recommandé
Digital Audio Recording and Playback
The AK7738VQ supports recording and playback subsystems that need programmable DSP behavior alongside multiple converters. Five ADC channels can capture multiple analog inputs, while four DAC channels support reconstructed or processed output. Because the processor is RAM-based, developers can configure filters, effects, mixing, and routing for particular product requirements rather than relying only on fixed hardware conversion. Sample-rate conversion resources are valuable in systems that receive or transmit audio through domains with differing rates. Engineering effort must include gain staging, headroom management, clock-domain planning, and DSP memory allocation. Validate the complete channel matrix and supported sample conditions before releasing firmware and production artwork.
Recommandé
Sound Effects and Acoustic Processing
The AK7738VQ is appropriate for embedded sound-effects and acoustic-processing systems because its RAM-based, 32-bit floating-point DSP can run user-defined algorithms. Possible functions include equalization, filtering, mixing, dynamic response shaping, and programmable spatial effects, depending on the implemented firmware and available processing resources. The integrated ADC and DAC blocks let the same device capture processed material and return it in analog form, reducing system complexity. Eight sample-rate-converter channels can also ease interoperability between algorithm and transport domains. Developers should benchmark numerical stability, algorithm latency, and processor load, then verify converter synchronization with an oscilloscope or audio analyzer during prototype validation.
Recommandé
Professional and Studio Audio Interfaces
The AK7738VQ can support compact professional-audio and studio interface functions requiring multiple conversion channels and programmable processing. The 5-channel ADC and 4-channel DAC arrangement provides a balanced multichannel topology, while the DSP can perform routing, level control, filtering, and user-defined signal conditioning. The 10 x 10 mm 64-LQFP package is larger and more pin-dense than many modern converter packages, but it consolidates several functions around a conventional surface-mount footprint. For low-noise performance, use short analog traces, solid ground-plane continuity, isolated digital return currents, and placement of decoupling capacitors at the appropriate supply pins. Confirm converter resolution, clock requirements, and supported digital formats in the datasheet.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour AK7738VQ — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | AK7738 |
|---|---|---|
| Package | 64-LQFP (10 x 10 mm) | 64-LQFP |
| Brand | Asahi Kasei Microdevices | Asahi Kasei Microdevices |
| Device Type | Floating-point DSP | RAM-based DSP |
| Architecture | Multi-DSP | Multi-DSP |
| ADC Channels | 5 channels | 5 channels |
| DAC Channels | 4 channels | 4 channels |
| Sample-Rate Converter Channels | 8 channels | 8 channels |
| Programmability | RAM-based programmable DSP | RAM-based programmable DSP |
Principaux différenciateurs
- Combines conversion and programmable processing in one package (vs AK7738)
- Supports programmable 32-bit floating-point audio processing (vs AK7738)
- Matches the principal converter integration of its same-family counterpart (vs AK7738)
Notes de conception
Separate the analog converter, digital DSP, clock, and power-return paths as far as the footprint allows. Place the input and output capacitors directly beside the associated AK7738VQ supply pins, keep converter traces short, and avoid routing high-current digital return paths beneath sensitive audio inputs. Confirm every component value, test point, and ground tie against the manufacturer reference layout before fabrication.
Treat the clock as a high-priority signal. Use short, continuous routes from the clock source, avoid stubs and test-point discontinuities where possible, and keep clock circuitry away from analog input and output nodes. A common return path beneath the device can reduce coupling, but only if it does not create unwanted current sharing with analog grounds. Validate the final clock waveform and converter synchronization on prototype hardware.
Program the AK7738VQ DSP and digital interfaces only after confirming channel mapping, gain structure, supported sample conditions, and sample-rate-converter direction. Set converter gain with sufficient headroom to avoid clipping, but avoid excessive analog gain that amplifies noise and reduces converter dynamic range. Compare processed outputs against the expected reference signal and inspect idle-channel behavior for instability or unwanted oscillation.
Do not treat a device with a similar feature set as a physical replacement without checking every package pin. In particular, verify power rails, grounds, analog inputs, analog outputs, digital buses, and control signals against the manufacturer pin-description table. The suffix may identify an orderable configuration, and firmware assumptions can also differ even when the converter counts and package family appear identical.
Informations de conformité
The searchable product record does not provide extractable compliance declarations for RoHS, REACH, lead-free status, halogen-free status, or conflict-minerals compliance. AEC-Q100 status is not applicable to the listed general-purpose audio DSP classification.
