BD3884FS-E2 2-Channel Audio Processor | ROHM
MPN： BD3884FS-E2 ✓ 啟用中BD3884FS-E2 概覽
An audio signal processor is a specialized analog integrated circuit that conditions audio signals before they reach amplifiers, speakers, or downstream digital converters. Within the product hierarchy, the BD3884FS-E2 is an audio signal processor, an audio special-purpose IC, and a semiconductor. Its two-channel organization permits paired stereo signals to be processed consistently while reducing the component count compared with separate single-channel circuits.
The manufacturer datasheet identifies a built-in AGC circuit that adjusts the sound difference among input sources. This function is useful when signals arrive at substantially different levels because the processor can help reduce level imbalance before downstream amplification. The BD3884FS-E2 also appears in distributor classifications as a TV audio amplifier or sound processor, identifying television audio conditioning as its principal application area.
The BD3884FS-E2 combines tone control with two-channel audio processing in one monolithic integrated circuit. Its surface-mount SSOP-24 construction supports automated PCB assembly while requiring less board area than a larger through-hole package. Because audio behavior depends on external resistors, capacitors, source impedance, and the surrounding signal path, designers should reproduce the manufacturer application circuit and verify channel balance, gain behavior, distortion, and stability in the finished television design.
Typical implementations include stereo television speaker systems, television main-audio processing, audio source switching and level balancing, and consumer electronics requiring a dedicated tone-control stage. The integrated AGC can be particularly valuable when multiple source paths produce inconsistent volume levels. For battery-powered portable products, power consumption must also be checked because analog signal processors commonly remain active whenever the television audio subsystem is enabled.
A key design consideration is that the device does not replace the final power amplifier. Place it before the audio output amplifier and observe the signal levels, impedance, and grounding arrangement specified in the manufacturer datasheet. PCB layout should keep audio traces away from switching nodes and high-current return paths, while stable decoupling and grounded return paths help preserve low-level audio fidelity.
This product page consolidates the exact device identity, package information, sourcing details, functional attributes, and engineering guidance for the BD3884FS-E2. It also distinguishes documented capabilities from parameters that require confirmation in the manufacturer datasheet, helping engineers evaluate the part efficiently before beginning a television audio-board design.
直接替換替代品，適用於 BD3884FS-E2 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
BD3884FS
✅ 直接替換📋 參考替代品（不在目錄中）
BD3884FS-E2 最大額定值與電氣特性
| Product Type | Audio signal processor |
| Manufacturer | ROHM Semiconductor |
| Channel Count | 2 channels |
| Circuit Classification | Tone control circuit |
| Integrated AGC | Yes |
| AGC Function | Adjusts the sound difference among input sources |
| 封裝 | 24-SSOP |
| Package Designation | PDSO24 |
| 安裝類型 | Surface mount |
| Primary Application | TV audio sound processing |
| Device Classification | Audio Special Purpose IC |
BD3884FS-E2 pdso24 腳位配置指南
BD3884FS-E2（pdso24 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： BD3884FS-E2.
請參閱 資料表 以查看完整腳位配置。
典型應用
BD3884FS-E2 適用於 6 應用s: Television Stereo Audio Processing, Multi-Source Audio Level Balancing, Television Speaker Drive Conditioning, Analog Home Theater Audio Path, Consumer Audio Source Switching, Stereo Audio Preprocessing.
Television Stereo Audio Processing
The BD3884FS-E2 fits the signal-conditioning stage of a stereo television because it processes two channels and includes tone control in one 24-SSOP device. The integrated AGC is intended to adjust sound differences among television input sources, helping reduce abrupt level changes before a downstream audio amplifier. Place the IC according to the manufacturer application circuit, decouple its supply close to the device, and verify both channels together because component tolerances and source impedance can affect stereo balance. Final board validation should cover worst-case source levels, required headroom, channel matching, and stable operation with the selected external network.
推薦
Multi-Source Audio Level Balancing
The BD3884FS-E2 is appropriate for television boards that combine sources with different output levels because its built-in AGC adjusts the sound difference among inputs. This function can simplify source selection when one path is consistently louder than another, provided the control range and timing satisfy the content requirements. Confirm the manufacturer's recommended external values and test both the overload and quiet-source cases. AGC should supplement, not replace, correct input gain staging; excessive amplification at the processor input can still cause distortion in a downstream amplifier.
推薦
Television Speaker Drive Conditioning
The BD3884FS-E2 can condition left and right television audio signals immediately before a final speaker-power amplifier. Its two-channel organization simplifies symmetric processing, while tone control allows the television designer to shape response without adding a separate dual network around every active stage. The processor is not a power-output amplifier, so its output level must remain within the limits of the manufacturer circuit and the downstream amplifier input. Use short, quiet routing for both channels and compare left and right performance during production testing to identify component-tolerance or grounding issues.
推薦
Analog Home Theater Audio Path
The BD3884FS-E2 supports an analog home-theater audio path where multiple source channels require tonal consistency before conversion or amplification. Two-channel processing is particularly useful for maintaining matching treatment across stereo television audio, while the AGC addresses level differences among selected sources. The IC should operate within its documented supply and signal-range limits, and the external tone and AGC network should follow the manufacturer reference implementation. Evaluate perceived loudness changes and channel balance with television program material instead of relying only on a narrow laboratory tone.
推薦
Consumer Audio Source Switching
The BD3884FS-E2 can be used in consumer audio equipment where source selection is followed by consistent tone and level treatment. The built-in AGC is useful when signals from different paths exhibit noticeable amplitude differences, while the two-channel structure suits stereo entertainment equipment. Source-switching components should be positioned so the processor receives a predictable signal amplitude and impedance. Confirm the AGC response during source transitions, test clipping at the highest permitted input, and preserve separate grounds and short signal routes to prevent switching noise from being amplified downstream.
推薦
Stereo Audio Preprocessing
The BD3884FS-E2 can serve as a dedicated stereo preprocessing block ahead of an ADC or power amplifier in a compact consumer design. Its 24-SSOP surface-mount package limits board area, and its two-channel format avoids duplicating the tone-control and AGC circuitry. The design must still account for the processor's required bypass or signal-path components, supply decoupling, and output loading. Reproduce the manufacturer reference values, compare both channels across the operating signal range, and verify that the chosen package footprint has adequate assembly clearance and thermal consistency for the intended production process.
推薦
推薦產品摘要
工程參考資料，適用於 BD3884FS-E2 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | BD3884FS |
|---|---|---|
| Package | 24-SSOP | 24-SSOP |
| Brand | ROHM Semiconductor | ROHM Semiconductor |
| Product Type | Audio signal processor | Audio signal processor |
| Channel Count | 2 channels | 2 channels |
| Circuit Function | Tone control circuit | Tone control circuit |
| Integrated AGC | Yes | Yes |
| Primary Application | TV audio sound processing | TV audio sound processing |
| Mounting Type | Surface mount | Surface mount |
主要差異化特點
- Combines two-channel tone control with integrated AGC (對比BD3884FS)
- Purpose-built television audio processing (對比BD3884FS)
- Compact integrated two-channel implementation (對比BD3884FS)
設計說明
Do not treat the BD3884FS-E2 as a speaker-power amplifier. It is a two-channel audio signal processor intended for tone control and AGC before a downstream output stage. Reproduce the manufacturer's application network and verify supply voltage, input range, output loading, and external component values in the datasheet. Incorrect gain staging can cause clipping before the AGC has an opportunity to reduce a signal, so measure levels at both processor inputs and outputs.
Place supply-decoupling components close to the corresponding IC pins and route the two audio channels symmetrically. Keep sensitive audio traces away from switching-node copper, inductors, and high-current return paths. Use a continuous ground reference for the audio section and avoid routing one channel beside a different return-current region than the other. After layout, compare left and right channels at multiple frequencies to detect balance errors introduced by component tolerances or unequal grounding.
Validate the complete source-to-amplifier path with the external AGC and tone-control components installed. Test source transitions, minimum and maximum program levels, sustained tones, and rapid level changes. Check for clipping, oscillation, channel imbalance, and audible gain pumping. The documented AGC function adjusts sound differences among sources, but its timing and range must be checked against the intended television content rather than inferred from the component description alone.
合規資訊
Compliance declarations for this exact ordering code are not established by the product excerpts. Confirm RoHS, REACH, lead-free, halogen-free, and conflict-minerals status using the current ROHM product and material declaration documentation.
