BD3826FS-E2 - 3-Channel Audio Switch | ROHM Semiconductor
Référence : BD3826FS-E2 ✓ ActifBD3826FS-E2 Présentation
An audio switch IC is an interface component that routes left, right, and related analog audio channels between circuit sections. In the broader electronics hierarchy, it belongs to the audio interface IC class, connects to signal-path ICs such as amplifiers, codecs, and converters, and ultimately supports complete consumer-audio systems. Its primary role is channel selection rather than signal amplification or digital-to-analog conversion.
The BD3826FS-E2 is identified as a three-channel switch with a 2.5 V to 5.5 V operating range. These characteristics make it suitable for low-voltage, multi-channel consumer equipment in which several analog sources must be selected and passed to downstream audio circuitry. The manufacturer identifies DVD-recorder signal switching as a principal application for the BD3826FS family.
The 32-SSOP-A construction provides a practical surface-mount footprint for compact boards while exposing the control and analog-channel connections required by a three-channel device. Because this is an analog routing component, board-level implementation must account for source impedance, grounding, channel isolation, and the prevention of unwanted pop or noise. Stable supply decoupling and short signal traces are particularly important when the switch sits close to amplifiers or system ground references.
Typical uses include DVD-recorder audio routing, stereo and multichannel entertainment equipment, analog source selection, and other consumer-audio products that require coordinated switching of multiple signals. The BD3826FS-E2 is most appropriate when the design uses a compatible three-channel routing architecture and can verify the complete pin assignments and control timing against the manufacturer datasheet before layout approval.
Designers should verify the pin description table, control logic, recommended application circuit, and external-component requirements in the ROHM datasheet. If the original PCB has already been laid out for this device, preserve its footprint and verify signal levels against the downstream amplifier input range. A footprint-compatible replacement should not be assumed unless its pinout, control interface, supply range, and channel behavior have been checked directly.
This product record combines the verified identity, package, channel count, supply range, application, and ordering information with structured design guidance for signal integrity, layout, and replacement assessment. It also distinguishes a true pin-compatible substitute from merely related audio-switching devices, helping engineers make a controlled sourcing decision without changing the board architecture.
Alternatives de remplacement direct pour BD3826FS-E2 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Aucune alternative de remplacement direct disponible pour ce produit.
Demander des alternativesBD3826FS-E2 Valeurs maximales et caractéristiques électriques
| Product Type | Audio Signal Switch IC |
| Number of Channels | 3 channels |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Boîtier | 32-SSOP-A |
| Type de montage | Surface mount |
| Primary Application | DVD recorder audio signal routing |
| Signal Type | Analog audio |
| Manufacturer Documentation Page Count | 6 pages |
Guide de configuration des broches du BD3826FS-E2 32-ssop-a
Configuration des broches du BD3826FS-E2 (boîtier 32-ssop-a). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour BD3826FS-E2.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
BD3826FS-E2 convient pour 6 applications: DVD Recorder Audio Routing, Stereo Source Selection, Analog Audio Input Multiplexing, Home Theater Signal Control, Portable Audio Equipment, Recording and Playback Routing.
DVD Recorder Audio Routing
The BD3826FS-E2 is specifically identified for DVD-recorder audio signal routing, making its three-channel architecture directly relevant to analog source selection within a compact consumer-audio board. With a 2.5 V to 5.5 V supply range, it can operate alongside common low-voltage system rails while directing selected audio paths toward downstream amplification. The 32-SSOP-A footprint permits integration on a dense mixed-signal PCB, but layout should preserve short analog traces, a continuous ground reference, and stable supply decoupling. Engineers should reproduce the manufacturer's switching topology and external components rather than treating the IC as a generic SPDT arrangement.
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Stereo Source Selection
The three-channel structure of the BD3826FS-E2 supports coordinated routing in stereo and related multichannel entertainment equipment. A designer can place it where multiple analog sources must reach a common downstream amplifier while avoiding duplicated analog distribution paths. Its 2.5 V to 5.5 V operating range suits low-voltage portable, living-room, and playback equipment, and the 32-SSOP-A package keeps the device practical for surface-mount assembly. Correct use requires matching signal amplitudes to the switch's ratings and validating control timing so channel changes do not create excessive audible transients at the amplifier input.
Recommandé
Analog Audio Input Multiplexing
BD3826FS-E2 can form part of an analog input-selection network where three channels must be routed according to system commands. The low 2.5 V to 5.5 V supply range simplifies integration with digital audio and control circuitry operating on nearby rails. Since the device performs routing rather than conversion, its contribution to overall audio quality depends on clean references, adequate source impedance, and sound grounding around the switched nodes. Place the IC between the source network and downstream codec or amplifier, and follow the manufacturer application diagram for bypass capacitance and control connections.
Recommandé
Home Theater Signal Control
The BD3826FS-E2 is suitable for the analog routing stage of compact home-theater and multimedia equipment where several audio paths feed a common playback chain. Its three-channel switching function and 32-SSOP-A package offer an established way to manage routing density on a constrained board. The 2.5 V to 5.5 V supply range supports mainstream low-voltage logic environments, although the complete system must maintain adequate headroom and sequencing. Keep analog traces away from switching-clock and digital return currents, use a quiet ground arrangement, and confirm channel polarity and mute behavior against the manufacturer application circuit.
Recommandé
Portable Audio Equipment
BD3826FS-E2 can support low-voltage signal routing in portable or compact audio products operating from a 2.5 V to 5.5 V system rail. Three independently addressed channels help concentrate source selection close to the audio processing chain without distributing analog routing across multiple boards. The surface-mount 32-SSOP-A package reduces board area compared with a larger through-hole implementation. In a portable design, engineers should check both signal behavior and thermal margin at the highest expected channel activity, while retaining the datasheet's grounding and bypass recommendations to prevent switching noise from reaching sensitive amplifiers.
Recommandé
Recording and Playback Routing
The BD3826FS-E2 can route analog channels within recording or playback equipment that needs to connect sources to conversion stages in a controlled sequence. Three channels provide enough routing flexibility for basic stereo plus auxiliary-path arrangements, while the 2.5 V to 5.5 V supply range aligns with common embedded audio rails. For recording accuracy, minimize ground differences between the switch and converter, avoid routing high-impedance sensor outputs directly unless their drive capability satisfies the manufacturer requirements, and verify the selected state at each command sequence. The result is a compact routing block that leaves amplification and conversion to purpose-specific companion ICs.
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Récapitulatif des produits recommandés
Données de référence d'ingénierie pour BD3826FS-E2 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit |
|---|---|
| Brand | ROHM Semiconductor |
| Package | 32-SSOP-A |
| Product Type | Audio signal switch IC |
| Channel Count | 3 channels |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Signal Type | Analog audio |
| Primary Application | DVD recorder audio signal routing |
| Mounting Type | Surface mount |
| Lifecycle Status | Active |
Notes de conception
Route the switched audio nodes as short, continuous traces and place their supporting components close to the relevant device pins. Keep digital control and clock signals away from the analog paths, particularly around the three audio channels and downstream amplifier inputs. Maintain a stable ground reference across the switch, codec, and output stage because even a small ground-potential difference can become an audible error in the reconstructed audio signal.
Use the bypass and supply-decoupling arrangement shown in the ROHM application circuit, with the capacitor placed directly across the relevant supply and ground pins. Keep the 2.5 V to 5.5 V operating range in view during power-system design, including startup sequencing and rail tolerance. Avoid routing the audio return current through the digital supply path, because shared return impedance can convert switching activity into channel-dependent noise.
Do not select a replacement solely because it has three channels or a 32-pin SSOP outline. Confirm the exact terminal numbering, switched versus common terminals, control polarity, supported signal range, and operating voltage before reusing the PCB. A footprint drawing alone cannot establish drop-in compatibility, and even mechanically similar devices can require different control timing or produce different channel-transition behavior.
Keep source impedances and downstream loads within the manufacturer's recommended operating conditions, and verify whether channel changes require mute sequencing in the surrounding amplifier. During prototype testing, observe each transition for clicks, pops, distortion, and channel leakage. These checks are especially useful when the selected source has a different DC offset or amplitude from the preceding channel and would otherwise drive a temporary overload into the downstream stage.
Informations de conformité
Compliance declarations are not stated in the manufacturer or distributor records used for this product. Confirm RoHS, REACH, lead-free, halogen-free, and conflict-minerals status for the exact ordering code with ROHM before production release.
