BD3490FV-E2 - 2-Channel Audio Tone Processor | ROHM
MPN: BD3490FV-E2 ✓ AktifBD3490FV-E2 Ringkasan
An audio sound processor is a functional block within the broader signal-chain hierarchy of audio amplifiers and analog audio integrated circuits. It receives stereo audio signals, applies tone or equalization functions, and passes the processed signals toward an audio power amplifier or loudspeaker drive stage. By integrating a 2-band equalizer into one IC, the BD3490FV-E2 can reduce the number of discrete passive networks and control components required for bass and treble adjustment in compact consumer-audio equipment.
The device's headline features include 2-channel processing, a built-in 2-band equalizer, a 4.75 V to 9.5 V compatible supply range, and a low-current Bi-CMOS implementation. The equalizer provides a practical tone-control function within the stereo signal path, while the relatively broad supply-voltage range accommodates conventional low-voltage audio rails. The 28-SSOP-B package is a surface-mount format suited to automated PCB assembly, although its relatively long body requires more board length than a compact leadless package.
ROHM describes the BD3490FV family as delivering high-fidelity audio while remaining easy to use. The Bi-CMOS process combines bipolar signal-processing characteristics with CMOS circuitry and is intended to support low-current, low-energy operation. Additional functions cited for the family include a built-in surround function, bass-boost or output-gain implementation with an external component, and behavior suited to changing the volume setting. Detailed signal-path behavior, control logic, and application-circuit values should be confirmed against the manufacturer datasheet before layout is finalized.
Typical applications include portable stereo systems, mini and micro component audio systems, television audio paths, and radio-cassette recorder products. These systems benefit from local bass and treble adjustment without allocating a separate equalizer IC. The part can also sit upstream of a power amplifier, where its processed stereo channels provide a tone-controlled source signal while leaving current delivery and loudspeaker drive to the downstream amplifier stage.
A key implementation consideration is the interaction among the 4.75 V minimum supply voltage, the external equalizer network, bypass capacitors, and the downstream amplifier input. Place the input, output, and bypass connections according to the manufacturer application circuit, keep analog signal traces short, and isolate the audio path from switching-node and high-current supply paths. Verify termination values, recommended capacitors, control settings, and maximum signal levels against the relevant ROHM documentation.
This product page combines the verified device identity, supply range, channel count, equalizer configuration, package information, and application context with practical selection guidance. It also identifies drop-in alternatives only when the package and functional fit can be established, avoiding replacements that require pin or board-layout changes.
Pilihan pengganti yang segera untuk BD3490FV-E2 — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
BD3490FV
✅ Masuk Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif rujukan (tidak dalam katalog)
BD3490FV-E2 Penilaian maksimum & Ciri-ciri Elektrik
| Product Type | 2-channel audio sound processor |
| Equalizer Configuration | Built-in 2-band equalizer |
| Power Supply Voltage Range | 4.75 V to 9.5 V |
| Audio Channel Count | 2 channels |
| Process Technology | Bi-CMOS |
| Kemasan | 28-pin SSOP-B |
| Total Pin Count | 28 pins |
| Jenis Pemasangan | Surface mount |
| Surround Processing | Built-in simple surround function |
| Bass Boost or Output Gain | Supported with an external component |
| Target Market | Portable stereo systems |
| Additional Applications | Mini component systems, micro component systems, televisions, and radio-cassette recorders |
Panduan Konfigurasi Pin BD3490FV-E2 28-pin ssop-b
Konfigurasi pin untuk BD3490FV-E2 (28-pin ssop-b pakai). Komponen analog ini mempunyai pin masukan, keluaran, dan kuasa. Rujuk dokumen pengeluar untuk konfigurasi pengecualian, pemulihan, dan pin aktifkan. Ideal untuk pengawasan isyarat dan litar pengukur.
Tiada data garisan pin yang diperoleh untuk BD3490FV-E2.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
BD3490FV-E2 patut untuk 6 aplikasis: Portable Stereo Systems, Mini Component Audio Systems, Micro Component Stereo Equipment, Television Audio Processing, Radio-Cassette Recorder Audio, Low-Voltage Audio Tone-Control Module.
Portable Stereo Systems
The BD3490FV-E2 fits portable stereo systems that require local tone adjustment without allocating a separate equalizer integrated circuit. Its 2-channel architecture processes left and right audio paths, while the built-in 2-band equalizer provides bass and treble control before the signal reaches the power amplifier. The 4.75 V to 9.5 V operating range accommodates low-voltage audio rails, and the low-current Bi-CMOS implementation supports portable-system power constraints. The 28-SSOP-B footprint requires sufficient board length but supports conventional surface-mount assembly.
Mini Component Audio Systems
In a mini component audio system, the BD3490FV-E2 can provide the tone-shaping stage between a source selector and the system power amplifier. Its built-in 2-band equalizer reduces the need for separate bass and treble control networks, while 2-channel processing preserves the stereo signal structure. The 4.75 V minimum supply voltage is compatible with common low-voltage audio rails. Designers should follow the ROHM application circuit for external resistance and capacitance values because those values directly shape the equalizer response and signal gain.
Micro Component Stereo Equipment
The BD3490FV-E2 is suited to micro component stereo equipment where board area is constrained and integrated tone control is valuable. Its 2-band equalizer is implemented in a dedicated sound-processor IC rather than requiring a larger collection of discrete network components. A 2-channel signal path supports ordinary stereo routing, and the 4.75 V to 9.5 V supply range allows integration with conventional low-voltage audio systems. Use a quiet analog ground and short output traces to preserve signal integrity through the tone-control stage.
Television Audio Processing
Television products can use the BD3490FV-E2 to add a local 2-band equalizer to a stereo audio path. The processor sits between an audio source or mixer and the television's downstream amplifier, allowing bass and treble to be adjusted without implementing those controls in discrete analog networks. Its 2-channel format aligns with standard stereo television audio, and the 4.75 V to 9.5 V supply range supports low-voltage audio rails. Confirm available signal headroom and control polarity in the manufacturer datasheet.
Radio-Cassette Recorder Audio
The BD3490FV-E2 fits radio-cassette recorder products that need integrated stereo tone control close to the audio signal path. The built-in 2-band equalizer supports user-adjustable bass and treble characteristics, while the 2-channel organization matches left and right playback or recording audio. Operating from 4.75 V to 9.5 V suits low-voltage portable and household implementations. The application circuit should be reviewed carefully for source impedance, recording-path levels, bypass placement, and any surround-function configuration.
Low-Voltage Audio Tone-Control Module
The BD3490FV-E2 can serve as the tone-control element in a dedicated low-voltage stereo module placed between source electronics and a power amplifier. Its integrated 2-band equalizer simplifies the analog signal path, while the 4.75 V to 9.5 V operating range supports common portable and compact-system rails. The built-in simple surround function and external-component bass-boost or output-gain options offer additional configuration choices. Verify those options against the ROHM application diagrams before selecting component values.
Data referensi kejuruteraan untuk BD3490FV-E2 — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | BD3490FV |
|---|---|---|
| Brand | ROHM Semiconductor | ROHM Semiconductor |
| Package | 28-SSOP-B | 28-SSOP-B |
| Product Type | 2-channel audio sound processor | Audio sound processor |
| Equalizer Configuration | Built-in 2-band equalizer | Built-in 2-band equalizer |
| Power Supply Voltage Range | 4.75 V to 9.5 V | 4.75 V to 9.5 V |
| Process Technology | Bi-CMOS | Bi-CMOS |
| Audio Channel Count | 2 channels | 2 channels |
| Surround Processing | Built-in simple surround function | Built-in simple surround function |
| Target Applications | Portable stereo, mini component, micro component, television, and radio-cassette recorder systems | Portable stereo systems and related audio products |
| Mounting Type | Surface mount | Surface mount |
Penyeberangsung Jelas
- Integrated 2-channel sound processing and equalization (vsBD3490FV)
- Low-voltage portable-audio operating range (vsBD3490FV)
- Same 28-pin surface-mount footprint (vsBD3490FV)
Catatan Desain
Follow the ROHM application circuit when placing input and output coupling components, bypass capacitors, equalizer networks, and supply connections. Keep the 28-SSOP-B footprint orientation unambiguous by marking pin 1 and verifying the package body width, lead pitch, and span against the mechanical drawing. Place high-current amplifier return currents on a path that does not share sensitive processor-ground segments, and route the processed audio outputs away from switching regulators and display power circuitry.
The 2-band equalizer network participates directly in the audio signal path, so its external component values and source impedance can influence gain, frequency response, channel balance, and distortion. Use the component tolerances and topology shown in the manufacturer datasheet, keep both audio channels laid out symmetrically, and provide a low-impedance ground reference. If the processor follows a switching converter, route and bypass the supply connection so switching ripple is attenuated before reaching the audio stage.
Do not treat a functionally similar audio processor as a direct replacement unless its package, pin numbering, power pins, input and output assignments, control interface, and external component network all match. In particular, verify whether a candidate uses I2C control, resistor-switched mode inputs, or a different surround architecture. Confirm the 4.75 V to 9.5 V operating range, permitted signal amplitude, and required bypass capacitors against the ROHM documentation before fitting a substitute to an existing board.
Maklumat Kesediaan
Compliance declarations for this exact MPN are not stated in the product references. Confirm RoHS, REACH, halogen-free, and conflict-minerals status with ROHM before release to an environmentally constrained program. Automotive qualification is not established by this consumer-focused audio processor.
