BD3488FS-E2 Audio Sound Processor with Equalizer | ROHM
MPN： BD3488FS-E2 ✓ 啟用中BD3488FS-E2 概覽
An audio sound processor is a specialized analog signal-processing IC. Within an audio system hierarchy, it performs control and conditioning functions such as equalization, which adjusts the relative amplitude of selected frequency bands before signals reach an amplifier or transducer. Unlike a power amplifier, the BD3488FS-E2 is characterized as an audio amplifier or sound-processor component rather than a speaker-output driver, so its suitability depends on the required signal level and downstream circuit architecture.
The BD3488FS-E2 combines an audio-specific function with a compact 32-pin SSOP package. This surface-mount format supports automated board assembly while providing a greater number of external connections than a small-outline package with only a few pins. The tape-and-reel presentation is appropriate for production feeding, pick-and-place assembly, and automated inspection. Pin assignments, exposed functions, and electrical limits should be taken directly from the package drawing in the ROHM Semiconductor datasheet.
As an equalizer-based sound processor, the device belongs in signal-conditioning paths for consumer audio, compact stereo systems, accessory products, and other equipment that needs controllable tonal adjustment. The useful design question is not only whether the part provides equalization, but also how its input and output signal levels, control method, stability, and supply requirements align with the rest of the signal chain. Those details determine whether the IC is appropriate as a standalone processing stage or as one element in a larger active-speaker architecture.
Typical implementation requires a stable supply, suitable input and output coupling or biasing networks, and decoupling close to the power pins. The PCB should preserve the manufacturer’s recommended grounding and trace geometry, while keeping high-gain audio paths away from switching nodes and noisy digital return currents. Grounding and decoupling choices can materially influence noise, channel-to-channel behavior, and the probability of oscillation.
Before committing the BD3488FS-E2 to a new PCB, verify the complete pin list, recommended application circuit, absolute maximum ratings, and test-point requirements. Also check that the 32-pin SSOP footprint, assembly tolerances, and tape-and-reel orientation match the production line. The same-package constraint is essential: a functionally similar IC cannot be treated as a drop-in replacement unless its pin numbering and electrical interfaces have been confirmed equivalent.
This page consolidates the confirmed device identity, package information, sourcing context, application guidance, and design considerations into an engineering-focused reference. It also distinguishes confirmed product characteristics from parameters that require direct verification in the manufacturer datasheet, helping designers evaluate the BD3488FS-E2 without assuming unverified electrical values or compatibility.
直接替換替代品，適用於 BD3488FS-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。
此產品無可直接替換的替代品。
申請替代品BD3488FS-E2 最大額定值與電氣特性
| Product Type | Audio sound processor with equalizer |
| Manufacturer | ROHM Semiconductor |
| 封裝 | 32-pin SSOP |
| 腳位數 | 32 pins |
| 安裝類型 | Surface mount |
| Shipping Package | Tape & reel |
BD3488FS-E2 tape & reel 腳位配置指南
BD3488FS-E2（tape & reel 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： BD3488FS-E2.
請參閱 資料表 以查看完整腳位配置。
典型應用
BD3488FS-E2 適用於 6 應用s: Compact Stereo Audio Processing, Active Speaker Signal Conditioning, Portable Audio Accessory, Digital Audio Source Interface, Audio Product Equalization, Low-Noise Audio Preamp.
Compact Stereo Audio Processing
The BD3488FS-E2 fits a compact stereo audio-processing block where equalization and sound conditioning are required before a separate output amplifier. Its 32-pin SSOP surface-mount package provides a practical route to automated assembly while offering enough pins for multiple analog connections and controls. Place the device between the source or preamp stage and the power amplifier, then follow the ROHM Semiconductor reference circuit for input and output networks. Confirm channel count, voltage gain, signal range, and supply limits in the manufacturer datasheet. The key trade-off is board area: the 32-pin package is larger than a minimal audio IC but supports a more elaborate signal and control architecture.
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Active Speaker Signal Conditioning
The BD3488FS-E2 can be evaluated for an active-speaker preamplifier section when the design requires tone adjustment before a loudspeaker power stage. Its equalizer-focused function is better aligned with conditioning a line-level signal than directly driving a low-impedance speaker, so a separate amplifier remains necessary unless the manufacturer explicitly specifies a suitable load. Use the 32-pin SSOP footprint in the enclosure’s main PCB and preserve the recommended grounding topology. Verify output swing, noise, distortion, stability, and maximum signal amplitude against the operating supply. This architecture avoids risking an overloaded output stage while allowing product-level tone control.
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Portable Audio Accessory
The BD3488FS-E2 is appropriate for a portable audio accessory that adds equalization to an existing analog source rather than accepting microphone input directly. The 32-pin SSOP surface-mount package supports compact, automated PCB assembly, while its sound-processor role can simplify the analog path between a source connector and a headphone or line-output amplifier. Confirm the permitted supply range and current consumption before choosing a battery architecture, and follow the datasheet reference circuit for gain and output coupling. The principal constraint is signal compatibility: the preceding stage must present a signal level that remains within the processor’s supported input and output range.
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Digital Audio Source Interface
The BD3488FS-E2 can form the analog tone-control stage after a digital-to-analog converter in a consumer audio product. A converter such as PCM1725DR can provide the digital source, after which the ROHM Semiconductor processor applies the specified equalization before an output amplifier. This arrangement keeps high-speed digital activity away from the sensitive analog path and allows product-specific tonal behavior to be adjusted in one defined stage. Use the manufacturer’s recommended coupling and filtering components rather than inferring values from another audio IC. Validate channel matching, output swing, noise, and distortion with the selected DAC operating conditions.
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Audio Product Equalization
The BD3488FS-E2 is suited to products that need an integrated equalizer to compensate for an enclosure, transducer, or downstream amplifier response. Placing the IC in the signal path can make tonal adjustment more repeatable than relying on external passive networks alone. Its 32-pin SSOP package is compatible with automated assembly, but the complete filter and control implementation still requires the ROHM Semiconductor recommended circuit. Verify that the intended control method and frequency bands match the product requirements. Designers should test channel-to-channel consistency and stability across supply voltage and temperature rather than assuming ideal equalizer behavior.
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Low-Noise Audio Preamp
The BD3488FS-E2 can be considered within a low-noise preamplifier when equalization must be combined with downstream analog conditioning. The device’s exact noise and gain ratings should be established from the ROHM Semiconductor datasheet and measured with the same external network used in production. Keep the equalizer stage away from switching regulators and digital clocks, provide local bypass capacitance, and use a stable ground reference. A low-noise amplifier such as NE5534PSR may be used in the surrounding signal chain when its bandwidth, supply, and drive requirements are compatible. The design must retain the manufacturer’s compensation and grounding arrangement to avoid oscillation or unintended gain.
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推薦產品摘要
工程參考資料，適用於 BD3488FS-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 |
|---|---|
| Brand | ROHM Semiconductor |
| Package | 32-pin SSOP |
| Mounting Type | Surface mount |
| Shipping Package | Tape & Reel |
| Product Type | Audio sound processor with equalizer |
| Pin Count | 32 pins |
| Audio Processing Function | Equalizer-based sound processing |
| Drop-In Replacement Status | No verified drop-in replacement established |
主要差異化特點
- Equalizer-centered audio processing in a 32-pin SSOP package (對比No verified drop-in alternative)
- Production-oriented tape-and-reel presentation (對比No verified drop-in alternative)
- Distinct sound-processing role before the output amplifier (對比No verified drop-in alternative)
設計說明
Implement the 32-pin SSOP footprint from the manufacturer package drawing and maintain its prescribed solder-mask and courtyard dimensions. Position the device near the supported analog signal path, but do not route sensitive audio nets beneath digital clock, switching, or high-current return areas. Confirm pin 1 orientation mechanically because a mirrored land pattern can create a board that assembles successfully yet produces incorrect audio behavior.
Use the supply voltage and bypass network specified by ROHM Semiconductor rather than selecting capacitors by convention. Place high-frequency decoupling close to the associated supply pins and use a quiet return path to the device ground reference. Because the exact current, quiescent consumption, and allowable voltage range require datasheet confirmation, validate the supply design across load transitions and the full intended temperature range before production release.
Preserve the manufacturer’s recommended input and output network, including any coupling, gain-setting, or compensation components associated with the equalizer. Keep the processed audio path compact and isolate it from switching-node currents and digital timing signals. Validate noise, distortion, channel matching, and stability on a representative PCB because an incorrect external-network value or return-path discontinuity can alter the behavior of this audio-processing IC.
Do not treat the BD3488FS-E2 as a direct speaker-power driver solely because it is listed as an audio amplifier. Confirm its supported signal amplitude, output load, supply requirements, and gain structure in the manufacturer datasheet. Likewise, do not substitute another audio processor unless all 32 pins, control functions, and electrical characteristics are confirmed equivalent. Functional similarity is not a substitute for pin-to-pin compatibility.
合規資訊
Current manufacturer declarations for RoHS, REACH, AEC-Q100, lead-free status, halogen-free status, and conflict-minerals compliance are not stated in the product information and require confirmation from ROHM Semiconductor.
