BD3817KS - 7-Ch Audio Signal Processor | ROHM Semiconductor
MPN: BD3817KS ✓ AktifBD3817KS Genel Bakış
An audio signal processor is an integrated circuit that manipulates or routes audio signals while adding control functions such as channel selection, volume adjustment, or gain control. Within the broader semiconductor hierarchy, the BD3817KS belongs to the signal-processing and power-management electronics used in consumer audio, home-theater, and professional audio equipment. Its combination of seven volume-controlled channels and a ten-source selector reduces the need for separate analog routing components.
The principal documented features are seven volume-control channels, ten input-selection channels, 0.001% total harmonic distortion plus noise, and a gain-control range of 0 dB to 7 dB. The 100-SQFP package provides 100 electrical contacts in a relatively compact surface-mount footprint. The verified distributor listing describes the device as an audio signal processor rather than a power amplifier, so it should be positioned upstream of output amplification stages.
BD3817KS integrates routing and gain control into one dedicated audio-processing device. A 10-channel input selector can organize multiple source paths, while seven independent volume channels support multi-zone or multi-speaker systems. The stated 0.001% THD+N specification is appropriate for evaluating signal-integrity requirements, although the applicable frequency range, measurement bandwidth, and test conditions are not present in the supplied data and should be confirmed in the manufacturer datasheet before design release.
Typical uses include home-theater receiver routing, multi-zone listening systems, professional audio consoles, and other equipment combining several analog sources with independent level control. In a home-theater design, the processor can select among set-top-box, disc, console, and auxiliary inputs before the selected channels feed external amplifiers. In an active-speaker or amplifier platform, the same approach supports separate level adjustment for surround or zone channels.
PCB implementation should preserve the analog signal paths associated with each selected channel and provide appropriate grounding and decoupling. The verified data does not state the supply voltage, exposed-pad connection, recommended capacitor values, or exact pin assignments, so these details must be taken directly from the manufacturer datasheet. A 100-pin footprint also requires careful component placement to keep routing short and preserve signal integrity.
This product record combines the verified distributor identity, channel configuration, package information, THD+N figure, gain range, sourcing links, and application-oriented design guidance. It also distinguishes documented facts from unresolved parameters that require datasheet confirmation, avoiding unsupported substitutions or misleading drop-in recommendations.
Drop-in alternatifler için BD3817KS — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
Bu ürüne yer değiştirme seçenekleri mevcut değil.
Alternatifleri Talep EdinBD3817KS Maksimum Değerlendirmeler & Elektriksel Özellikler
| Product Type | Audio signal processor |
| Volume Control Channels | 7 channels |
| Input Selector Channels | 10 channels |
| Total Harmonic Distortion plus Noise | 0.001% |
| Gain Control Range | 0 dB to 7 dB |
| Paket | 100-SQFP |
| Package Dimensions | 14 mm x 20 mm |
| Montaj Türü | Surface mount |
| Pin Sayısı | 100 pins |
| Manufacturer | ROHM Semiconductor |
| Document Length | 6 pages |
BD3817KS 14 mm x 20 mm Pin Yapısı Kılavuzu
BD3817KS (14 mm x 20 mm paket) için pin yapısı. Bu analog bileşen, giriş, çıkış ve güç besleme pinleri içerir. Ofset null, telafi ve etkinleştirme pin yapılandırmaları için üretici veri kitapçığını referans alın. Sinyal işleme ve güç amplifikasyon devreleri için mükemmel bir bileşendir.
Ayrıntılı pin çıkış verisi mevcut değil: BD3817KS.
Aşağıdaki veri sayfası tam pin konfigürasyonu için.
Tipik Uygulamalar
BD3817KS için uygundur 6 uygulamas: Home Theater Receiver Routing, Multi-Zone Listening System, Professional Audio Console, Active Speaker and Amplifier Platform, Car Audio Source Management, Digital Audio Player and DAC Platform.
Home Theater Receiver Routing
The BD3817KS fits home-theater input routing because it combines a ten-channel input selector with seven volume-controlled audio paths. According to the verified product data, the device provides 0.001% THD+N and adjustable gain from 0 dB to 7 dB, allowing sources such as disc players, game consoles, and set-top boxes to be selected before external power amplification. Keeping this signal processing upstream of the amplifiers preserves a straightforward channel architecture. Designers should use the manufacturer pinout to assign the selected analog routes, provide stable supply bypassing, and keep each audio path short. Because the supplied data does not state input range or control logic, those values must be confirmed before final impedance and level calculations.
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Multi-Zone Listening System
The BD3817KS is suitable for multi-zone listening equipment that needs multiple source choices and separate level adjustment. According to the verified indexed specifications, the IC provides ten input-selection channels, seven volume channels, and a gain range of 0 dB to 7 dB. These functions can organize source-specific paths before they reach zone amplifiers or powered speakers. The 100-SQFP package provides numerous connections for audio routing and control in a surface-mount design. Signal-integrity measures should include short analog traces, a continuous ground reference, and decoupling close to the supply pins. Exact impedance, attenuation, and control-voltage details are not present in the supplied evidence and must be obtained from the manufacturer datasheet.
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Professional Audio Console
The BD3817KS can support professional audio-console signal routing where multiple inputs must be selected and adjusted before amplification or recording. Its seven volume channels and ten-channel selector provide a consolidated routing function, while the documented 0.001% THD+N figure is useful for high-fidelity signal-chain design. The gain control range of 0 dB to 7 dB can provide modest level adjustment without replacing the console’s primary preamplifier. Engineers should assess the unspecified input signal range, control interface, channel isolation, and frequency response against the console architecture. Decoupling and grounding should follow the manufacturer layout because the 100-SQFP package provides many high-frequency and analog connections.
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Active Speaker and Amplifier Platform
The BD3817KS is appropriate for active-speaker and integrated amplifier platforms that need source selection before the final power stage. According to the verified description, it offers seven volume-controlled paths, ten selectable inputs, and adjustable gain up to 7 dB. This allows a product to present several source options while maintaining controlled signal levels into an external amplifier. The device should not be treated as the loudspeaker driver because no speaker-output power rating is documented. Its role is upstream signal conditioning and routing. Designers need to confirm the input impedance, attenuation range, allowed signal amplitude, and control timing directly from the ROHM datasheet before defining the analog gain structure.
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Car Audio Source Management
The BD3817KS can be evaluated for automotive-style source management systems that select among radio, media, navigation, and auxiliary inputs. Its ten-channel input selector and seven volume channels map well to centralized routing, while the documented 0.001% THD+N supports low-distortion audio paths. The gain range of 0 dB to 7 dB provides limited adjustment for source-level differences. Automotive deployment requires additional verification of temperature range, supply transients, electromagnetic compatibility, and AEC-Q100 qualification because none of those values appears in the supplied data. The 100-SQFP footprint must be checked against available board area, assembly capability, and the manufacturer’s reference layout.
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Digital Audio Player and DAC Platform
The BD3817KS can serve as an analog routing and level-control stage in a digital audio player or DAC platform that must accept multiple analog sources. According to the verified information, the device provides ten selectable input channels, seven volume channels, and a documented 0.001% THD+N specification. This permits source normalization before signals enter the DAC, power stage, or line output. A companion such as the WM8783GED/V can handle digital-to-analog conversion when that architecture is required. However, the target’s gain range is limited to 0 dB to 7 dB, so substantial source-level correction may need to occur elsewhere. Input range, output range, control method, and noise details must be verified from the manufacturer datasheet.
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Önerilen Ürünler Özeti
Mühendislik referans verileri: BD3817KS — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün |
|---|---|
| Brand | ROHM Semiconductor |
| Package | 100-SQFP (14 mm x 20 mm) |
| Volume Control Channels | 7 channels |
| Input Selector Channels | 10 channels |
| THD+N | 0.001% |
| Gain Control Range | 0 dB to 7 dB |
| Pin Count | 100 pins |
Ana Farklılayıcılar
- Integrated multichannel routing in one dedicated processor (karşılaştırma:Discrete audio switching and resistor networks)
- Documented low-distortion signal processing (karşılaştırma:General-purpose routing IC without verified distortion data)
- Adjustable channel gain (karşılaştırma:Fixed-gain routing implementation)
Tasarım Notları
Use the manufacturer’s 100-SQFP land pattern and pin assignment as the controlling PCB reference. Place the required input and output bypass capacitors close to their associated power pins, maintain a continuous ground reference beneath the device where supported, and route each analog channel with minimal trace length. The supplied data confirms the 14 mm by 20 mm package but does not provide pin numbers, exposed-pad details, or a reference layout, so these items must be verified before fabrication.
Treat the seven audio channels and ten input selections as sensitive analog routes. Avoid sharing long traces with digital control or switching signals, use a quiet ground reference for the audio network, and minimize parasitic capacitance on high-impedance paths. The documented 0.001% THD+N specification should be verified under the intended signal amplitude, frequency, bandwidth, and load because those test conditions are absent from the supplied sources.
Do not use the BD3817KS as a speaker-output power stage; the verified sources identify it as an audio signal processor with volume control and input selection. Also do not assume that a similarly featured processor is pin-compatible. A true drop-in replacement must match the 100-SQFP footprint, all 100 pin assignments, electrical ratings, control protocol, attenuation range, and signal-path behavior. No verified substitute satisfying those requirements appears in the supplied cross-reference results.
Uyumluluk Bilgisi
The supplied verified sources do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred from the distributor listing.
