BD3464FV-E2 - 4-Channel I2C Audio Volume Controller | ROHM
Référence : BD3464FV-E2 ✗ Fin de vieBD3464FV-E2 Présentation
An audio volume controller is an audio signal-processing IC that applies electronic attenuation between source and amplifier stages. Its broader hierarchy is audio volume controller, audio processor, analog audio IC, interface IC, and semiconductor. Unlike a passive potentiometer, the BD3464FV-E2 permits volume changes through an I2C command while preserving a controlled signal path and reducing dependence on mechanical adjustment.
Key features include four independently controlled audio channels, an advanced-switch circuit intended to reduce volume-control switching noise, and low-current operation implemented with a Bi-CMOS process. The manufacturer data also identifies I2C control, 5 V control compatibility, a 7 V to 9.5 V supply range, and placement of I/O terminals together to simplify PCB layout and reduce board area. A distributor description reports RoHS3 compliance.
Technically, the part combines digital command processing with an analog attenuation function. The advanced switch is intended to suppress noise associated with changing the attenuation state, which is important when volume adjustments occur during music or speech playback. Its Bi-CMOS implementation combines bipolar and CMOS characteristics with an emphasis on low current consumption. The complete electrical limits, control register map, attenuation steps, frequency response, and distortion specifications require confirmation from the manufacturer datasheet.
Typical uses include powered speakers, mini hi-fi systems, automotive head units, home-theater receivers, and other multichannel audio products in which software control is preferable to a mechanical volume control. The I2C interface also allows a system controller to coordinate attenuation with playback status, mute functions, or source selection.
Designers should verify the complete pin function map, recommended input and output coupling network, I2C address configuration, and external component values against the manufacturer datasheet before making a board revision. Because the part is not recommended for new designs, new products should generally use a currently recommended audio volume-control IC unless continuity with an existing platform is required.
This page consolidates the verified manufacturer and distributor information, distinguishes documented capabilities from unavailable technical details, and provides application and design guidance without inventing missing electrical limits, pricing, pin assignments, or drop-in equivalents.
Alternatives de remplacement direct pour BD3464FV-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 alternativesBD3464FV-E2 Spécifications
| Product Type | General-purpose 4-channel electronic volume controller |
| Number of Audio Channels | 4 channels |
| Supply Voltage Range | 7 V to 9.5 V |
| Control Interface | I2C bus |
| Control Voltage | 5 V |
| Process Technology | Bi-CMOS |
| Switching Circuit | Built-in advanced switch |
| Boîtier | 20-SSOP-B |
| Nombre de broches | 20 pins |
| Type de montage | Surface mount |
| I/O Arrangement | I/O terminals grouped together |
| Statut RoHS | RoHS3 compliant |
| Lifecycle Recommendation | Not recommended for new designs |
Guide de configuration des broches du BD3464FV-E2 20-ssop-b
Configuration des broches du BD3464FV-E2 (boîtier 20-ssop-b). 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 BD3464FV-E2.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
BD3464FV-E2 convient pour 6 applications: Powered Speaker Volume Control, Mini Hi-Fi System, Home-Theater Receiver, Automotive Head-Unit Audio, Multichannel Active Speaker Hub, Industrial Audio Control Panel.
Powered Speaker Volume Control
The BD3464FV-E2 fits powered-speaker products requiring four-channel, software-controlled attenuation. Its four audio outputs can manage left and right channels for two stereo zones, while I2C control lets a host processor change levels without mechanical potentiometers. The built-in advanced switch is intended to reduce audible switching noise during software-driven adjustments. With a documented 7 V to 9.5 V supply range, the IC is appropriate for legacy speaker platforms, although its not-for-new-designs status favors a current device for new releases. Final impedance, coupling, gain, distortion, and output-loading requirements must be verified from the manufacturer datasheet.
Recommandé
Mini Hi-Fi System
The BD3464FV-E2 is appropriate for an established mini hi-fi system where four audio paths require coordinated electronic volume control. I2C control permits a system MCU to apply volume changes, mute states, or source-level presets while the built-in advanced switch addresses noise during attenuation changes. The 20-SSOP-B package supports conventional surface-mount assembly, and the 7 V to 9.5 V supply can fit a compatible legacy analog architecture. Because the device is not recommended for new designs, it is best suited to continuation builds. Input impedance, output impedance, channel attenuation steps, and recommended coupling capacitors require confirmation in the datasheet.
Recommandé
Home-Theater Receiver
The BD3464FV-E2 can support volume management in a legacy home-theater receiver because it provides four electronic attenuation channels under I2C control. Four channels are sufficient for front-left, front-right, rear-left, and rear-right level control in a multichannel amplifier architecture. Software control allows the receiver controller to synchronize level changes with input selection and playback status, while the advanced-switch circuit is intended to reduce switching artifacts. The documented 7 V to 9.5 V operating range must be coordinated with the receiver power tree. New receiver designs should use a currently recommended part because ROHM marks BD3464FV as not recommended for new designs.
Recommandé
Automotive Head-Unit Audio
The BD3464FV-E2 may fit an unchanged legacy automotive head unit requiring four-channel electronic volume control through an established I2C command path. Its advanced switch is intended to reduce noise when the vehicle audio system changes attenuation levels, and the grouped I/O layout can simplify board integration compared with a distributed control design. However, the supplied evidence does not confirm an automotive temperature rating, AEC-Q100 qualification, ESD level, or load-dump tolerance. Those qualifications must be verified before continued automotive use. For a new head-unit platform, select a currently recommended automotive-qualified audio control IC instead.
Recommandé
Multichannel Active Speaker Hub
The BD3464FV-E2 is suitable for a legacy active-speaker hub in which one host controller must adjust several audio channels without mechanical controls. Four-channel operation allows grouped attenuation for stereo and surround outputs, while I2C provides a straightforward command path from a digital audio controller. The low-current Bi-CMOS implementation noted by the manufacturer can benefit power-sensitive portable equipment, although exact quiescent current is unavailable in the supplied data. The advanced switch reduces switching noise when levels change. Before using the IC with class-D amplifiers, verify output impedance, maximum signal level, external component requirements, and stability margins from the manufacturer datasheet.
Recommandé
Industrial Audio Control Panel
The BD3464FV-E2 can be used in an established industrial control panel or announcement system where four audio zones require coordinated attenuation under host-controller supervision. I2C control supports software presets and coordinated mute behavior, while the advanced switch is intended to reduce noise during level changes. The 7 V to 9.5 V operating supply must be derived from the panel's existing analog power rail. Industrial suitability cannot be confirmed because the verified excerpts do not provide operating temperature, ESD, isolation, noise-immunity, or long-term reliability specifications. A new safety- or mission-critical system should use a currently supported part with documented environmental qualifications.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour BD3464FV-E2 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit |
|---|---|
| Package | 20-SSOP-B |
| Brand | ROHM Semiconductor |
| Product Type | General-purpose 4-channel electronic volume controller |
| Number of Channels | 4 channels |
| Supply Voltage Range | 7 V to 9.5 V |
| Control Interface | I2C bus |
| Control Voltage | 5 V |
| Process Technology | Bi-CMOS |
| Lifecycle Status | Not recommended for new designs |
| Switching Noise Reduction | Built-in advanced switch |
Principaux différenciateurs
- Four-channel electronic attenuation in one controlled device (vs Discrete potentiometer implementation)
- Software-controlled volume adjustment (vs Mechanical potentiometer)
- Purpose-built volume-switching circuit (vs Generic resistive attenuation network)
Notes de conception
Do not treat a distributor cross-reference result as proof of pin compatibility. The BD3464FV-E2 must be compared with any proposed replacement by verifying all 20 terminals, supply pins, analog input and output impedance, I2C address behavior, register map, attenuation steps, and control timing against the manufacturer datasheet. A matching 20-SSOP-B outline alone is insufficient because I/O functions and firmware behavior can differ. Because the original is not recommended for new designs, begin with a current-device search when the PCB and firmware are not frozen.
Use the manufacturer reference layout and pinout rather than reconstructing connections from the grouped I/O description. Place the BD3464FV-E2 close to the controlled audio paths, keep analog input and output routing short and away from digital clock and switching-node traces, and route I2C away from sensitive audio nets. The verified material states that I/O terminals are grouped to simplify PCB layout, but it does not provide trace widths, spacing, grounding, or decoupling values. Those details require the manufacturer datasheet and reference circuit.
The documented operating supply is 7 V to 9.5 V, so the analog supply regulator and decoupling network must remain within that range under load and startup transients. The 5 V control specification applies to the digital command interface and should not be interpreted as the main supply rating. Use the manufacturer's recommended input, output, and bypass capacitors, and verify power-up sequencing against the absolute-maximum table. Exact capacitor values and quiescent current were not available in the supplied excerpts and must not be inferred.
Evaluate the complete audio path rather than evaluating volume-control switching noise in isolation. Confirm input impedance, output impedance, allowed source and load capacitance, attenuation linearity, frequency response, and total harmonic distortion from the manufacturer datasheet. The advanced-switch architecture is intended to reduce noise during volume changes, but its benefit depends on correct external coupling and grounding. Validate audible transients using the intended source material, amplifier topology, supply rail, and digital control sequence.
The verified excerpts do not provide the I2C slave address, register definitions, data format, reset behavior, or volume-step resolution. Firmware must not be written from assumptions based on generic audio codecs. Download the current manufacturer datasheet, confirm whether the address and registers are fixed or configurable, and implement readback or deterministic power-on initialization where supported. Also verify how mute, zero-volume, and invalid-command states behave before releasing a production design.
Informations de conformité
An indexed distributor record identifies the part as RoHS3 compliant. No verified RoHS exemption detail, REACH declaration, AEC-Q100 qualification, lead-free statement, halogen-free statement, or conflict-minerals report was supplied.
