BD3403FV-E2 - 2-Channel Audio Signal Processor | ROHM
부품 번호: BD3403FV-E2 ⚠ 최종 구매BD3403FV-E2 개요
An audio signal processor is an analog IC that conditions multiple audio channels through volume, tone, balance, or equalization functions before the signal reaches amplifiers and speakers. In the broader hierarchy, it belongs to the audio processor and analog signal-conditioning IC category within audio and video semiconductors. Its role is to provide local channel control and tonal shaping while preserving compatibility with conventional analog audio signal paths.
The BD3403FV-E2 is a 2-channel device with a 40-SSOPB package. Its operating supply range of 6.5 V to 9.5 V suits powered audio equipment, while the resistance-ladder implementation is intended to provide low-noise, low-distortion volume and tone adjustment. Soft-switch circuitry is specifically intended to reduce shock sound when switching functions occur. The manufacturer describes the device as using the BiCOMS process with low power consumption.
The signal-processing architecture separates front-volume and rear-volume stages. This two-stage arrangement is intended to improve signal-to-noise ratio while allowing separate control of surround and rear channels. The built-in 3-band equalizer provides bass, mid, and treble adjustment, making the device appropriate for systems requiring multiple tonal controls rather than a simple passive volume network.
Typical applications include home-theater receiver channel control, surround-sound preamplifier circuitry, automotive audio head units, and powered stereo systems. In a home-theater design, the processor can sit between source-level audio inputs and power amplifiers, allowing independent channel-level and tonal adjustments. Automotive use is also conceptually aligned with the 6.5 V to 9.5 V supply range, although qualification and environmental requirements must be checked separately.
When laying out the circuit, follow the manufacturer pin-description table for the 40-SSOPB footprint and keep the analog signal path short and away from switching-power nodes. Confirm the exact external component network, recommended decoupling, and control-interface implementation in the manufacturer datasheet before production release. The product page identifies the BD3403FV family as discontinued, so lifecycle planning should include last-time-buy assessment.
This page combines the manufacturer product description with distributor package and lifecycle information, then adds application guidance, design cautions, and a structured comparison for engineers evaluating the BD3403FV-E2.
드롭인 대체품: BD3403FV-E2 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
BD3403FV
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
BD3403FV-E2 최대 정격 & 전기적 특성
| Product Type | 2-channel audio signal processor |
| 동작 공급 전압 | 6.5 V to 9.5 V |
| Channel Count | 2 channels |
| Equalizer Bands | 3 bands: bass, mid, and treble |
| Volume Architecture | 2-stage front-volume and rear-volume configuration |
| Rear and Surround Control | Yes |
| Soft-Switching | Yes; designed to reduce shock sound during switching |
| Volume and Tone Circuit | Resistance-ladder circuit |
| Signal-to-Noise Objective | High S/N through the 2-stage front-volume and rear-volume configuration |
| Process Technology | BiCOMS process |
| Power Consumption | Low-consumption implementation |
| 패키지 | 40-SSOPB |
| 실장 유형 | Surface mount |
| Product Description | Sound processor with built-in 3-band equalizer |
| 수명 주기 상태 | Last Time Buy; discontinuation announced |
BD3403FV-E2 40-ssopb 핀 구성 가이드
BD3403FV-E2(40-ssopb 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: BD3403FV-E2.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
BD3403FV-E2 적합 용도: 6 애플리케이션s: Home-Theater Surround Processing, Automotive Audio Head Units, Powered Stereo Amplifier, Multichannel Active Speaker System, Analog Radio and Media Player, Audio Production and Recording Monitor.
Home-Theater Surround Processing
The BD3403FV-E2 fits home-theater preamplifier and receiver circuitry requiring separate surround and rear-volume control. Its 2-channel architecture processes the designated left and right channels through the built-in bass, mid, and treble equalizer, while the two-stage front-volume and rear-volume configuration is intended to improve signal-to-noise ratio. The 6.5 V to 9.5 V operating range is suitable for powered analog audio equipment. Place the processor before the power-amplifier stages, keep the audio traces short, and follow the manufacturer application circuit for bypass capacitors and control resistors.
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Automotive Audio Head Units
The BD3403FV-E2 can support channel-level and tonal adjustment in analog automotive head-unit signal paths. Its 6.5 V to 9.5 V supply range is compatible with common powered-audio rails, and the built-in 3-band equalizer provides bass, mid, and treble controls without requiring three separate passive networks. The resistance-ladder volume and tone implementation is intended for low-noise, low-distortion operation. Automotive deployment still requires confirmation of temperature grade, vibration environment, and any automotive qualification, because the manufacturer identifies the family as Last Time Buy.
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Powered Stereo Amplifier
The BD3403FV-E2 is suitable for the pre-amplifier section of a powered stereo system requiring two-channel level and tone control. Its built-in three-band equalizer supports bass, mid, and treble adjustment, while the separate front-volume and rear-volume stages provide a structured signal path for surround or rear outputs. Because the device operates from 6.5 V to 9.5 V, the system supply must provide adequate headroom. Use short analog traces, decouple the supply close to the IC, and validate the output signal range before connection to power-amplifier inputs.
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Multichannel Active Speaker System
The BD3403FV-E2 can provide local volume and equalization in an active multichannel speaker system where each amplifier zone requires passive tonal adjustment. Its two-channel processing allows paired left and right signals to share the same bass, mid, and treble settings, while the two-stage volume arrangement is designed to improve signal-to-noise performance. The soft-switch function helps reduce shock sound during mode changes. Validate channel polarity, control compatibility, and attenuation range against the manufacturer application circuit before production use.
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Analog Radio and Media Player
The BD3403FV-E2 fits analog radio and media-player products that require tone shaping before an output amplifier. Its three-band equalizer gives the user bass, mid, and treble adjustment, and the resistance-ladder circuitry is intended to maintain low noise and low distortion during level control. Use the processor after the source selector and before the final volume or power-amplifier stage. The 6.5 V to 9.5 V supply range requires careful rail planning, while the manufacturer pin and application diagrams should define all required external resistors and capacitors.
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Audio Production and Recording Monitor
The BD3403FV-E2 can be used in monitoring and production equipment requiring a passive, two-channel tone and level-control stage. Its built-in 3-band equalizer allows broad tonal adjustment, while the front-volume and rear-volume stages provide a controlled signal path with an emphasis on signal-to-noise ratio. Soft switching can reduce audible transients during function changes. Because this is an analog sound processor rather than a converter, use the manufacturer circuit when setting source levels, ensuring that the control network does not overload the following amplifier input.
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추천 제품 요약
엔지니어링 참조 데이터: BD3403FV-E2 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | BD3403FV |
|---|---|---|
| Package | 40-SSOPB | 40-SSOPB |
| Brand | ROHM Semiconductor | ROHM Semiconductor |
| Product Type | 2-channel audio signal processor | Sound processor with built-in 3-band equalizer |
| Operating Supply Voltage | 6.5 V to 9.5 V | 6.5 V to 9.5 V |
| Channel Count | 2 channels | 2 channels |
| Equalizer Bands | 3 bands: bass, mid, and treble | 3 bands: bass, mid, and treble |
| Volume Architecture | 2-stage front-volume and rear-volume configuration | 2-stage front-volume and rear-volume configuration |
| Soft-Switching | Yes | Yes |
| Lifecycle Status | Last Time Buy | Last Time Buy |
주요 차별점
- Integrated two-channel sound processing (vs BD3403FV)
- Dedicated rear and surround processing (vs BD3403FV)
- Integrated three-band tonal adjustment (vs BD3403FV)
- Low-noise resistance-ladder control (vs BD3403FV)
설계 노트
Route the two analog channels as short, matched paths between the source, the BD3403FV-E2, and the following amplifier. Keep the device away from switching regulators, high-current inductors, and digital timing nodes. Place bypass and application-network components close to their associated pins, and use a continuous ground reference beneath the analog section where the manufacturer's layout guidance permits.
Operate the supply within the specified 6.5 V to 9.5 V range and follow the manufacturer requirements for bypass capacitance and external networks. Keep analog signal amplitudes within the device's operating limits so that the resistance-ladder volume and tone stages do not clip or add excessive distortion. Confirm startup behavior and control settling in the final amplifier configuration.
Do not assume that a functionally similar audio IC is a drop-in substitute merely because both devices process audio. The footprint, pin assignments, control logic, supply pins, external resistors, and capacitor values must all match. In particular, a converter such as the PCM1796DB has a different architecture and is not a substitute for the BD3403FV-E2 without PCB redesign.
Plan for the two-stage front-volume and rear-volume architecture when assigning the PCB signal path. Preserve the intended signal order, keep the rear-volume section downstream of the front section, and isolate control inputs from sensitive audio nodes. Soft switching can reduce switching shock noise, but it does not eliminate the need for careful grounding and short analog routing.
규정 준수 정보
The manufacturer product page identifies the BD3403FV family as Last Time Buy and states that discontinuation has been announced. No specific RoHS, REACH, halogen-free, or conflict-minerals declaration was included in the cited product information.
