BD37513FS-E2 - 4-Channel Car Audio Tone Processor | ROHM
MPN： BD37513FS-E2 ✓ 啟用中BD37513FS-E2 概覽
An audio sound processor is a signal-path IC that manages source selection, level control, and tonal shaping between audio sources and a power amplifier. In the hierarchy, it belongs to the sound-processor family within analog audio processors and broader audio application ICs. By combining a stereo input selector, main-volume control, loudness function, and four-channel fader control, it reduces the external circuitry and control complexity required by a conventional car-audio head unit.
The BD37513FS-E2's built-in 2-band equalizer adjusts bass and treble tone without external equalizer components. Its three input selectors allow compatibility with three audio-input sources, while four-channel independent volume and fader control provide separate level adjustment for four output channels. The integrated functions make the device particularly suitable for automotive head units, radio systems, and multi-source vehicle audio platforms.
The -E2 suffix identifies the specified ROHM ordering variant of the BD37513FS family. It is controlled through an I2C interface, which supports common automotive control software and enables a host microcontroller or audio system controller to adjust source, volume, loudness, and equalizer settings. The 7 V to 9.5 V operating range is suited to conventional automotive low-voltage power systems when used with the appropriate surrounding circuitry.
Typical implementations include 4-channel car-audio head units, radio and auxiliary-source selectors, vehicle navigation-audio interfaces, and amplified speaker systems requiring independent channel-level control. The integrated equalizer and fader functions are especially useful where PCB area and external-component count must be limited without removing essential tone and volume controls.
Design the surrounding circuitry around the manufacturer's recommended application circuit and pin descriptions. Confirm the I2C address, supported control registers, input signal levels, stabilization requirements, and exposed thermal conditions against the ROHM datasheet before releasing the PCB. Treat the 20-SSOP-A footprint as a fixed-layout constraint and verify every analog and digital connection in the pin-description table.
This product record combines the functional description, package information, technical constraints, practical use cases, and sourcing guidance for engineers evaluating the BD37513FS-E2. It also separates confirmed drop-in replacements from package or feature similarities, helping designers determine whether a board can be reused without an unverified pin-compatibility assumption.
直接替換替代品，適用於 BD37513FS-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。
此系列的變體
與下列產品可直接替換的同系列型號： BD37513FS-E2 （相同外形與佔位） — 差異在於 Control Interface, Package, Product Type.
BD37515FS-E2
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →BD37513FS
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
BD37513FS-E2 最大額定值與電氣特性
| Product Type | Sound processor with built-in 2-band equalizer |
| Channel Configuration | 4 channels |
| Supply Voltage Range | 7 V to 9.5 V |
| Control Interface | I2C |
| Input Selector Count | 3 inputs |
| Equalizer Bands | 2 bands |
| Equalizer Controls | Bass and treble |
| Independent Volume and Fader Channels | 4 channels |
| Integrated Functions | Stereo input selector, input-gain control, main volume, loudness, and 4-channel fader volume |
| Primary Application | Car audio |
| 封裝 | 20-SSOP-A |
| 腳位數 | 20 pins |
| 安裝類型 | Surface mount |
BD37513FS-E2 20-ssop-a 腳位配置指南
BD37513FS-E2（20-ssop-a 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： BD37513FS-E2.
請參閱 資料表 以查看完整腳位配置。
典型應用
BD37513FS-E2 適用於 6 應用s: Automotive Audio Head Unit, Four-Channel Amplifier Control, Radio and Auxiliary-Source Selector, Vehicle Navigation-Audio Interface, Multi-Source Automotive Amplifier, Compact Automotive Sound-Control Module.
Automotive Audio Head Unit
The BD37513FS-E2 fits a compact car-audio head unit requiring several source inputs and channel-level adjustment. Its three input selectors support three audio sources, while main volume, loudness, and four-channel fader control centralize the controls normally distributed across a head-unit signal chain. The built-in 2-band bass and treble equalizer allows tonal adjustment without external filter components. Operating from 7 V to 9.5 V, the device aligns with conventional automotive supply architecture when paired with appropriate protection and decoupling. I2C control also lets the head-unit host processor manage settings rather than requiring a separate control line for every function.
推薦
Four-Channel Amplifier Control
The BD37513FS-E2 is useful ahead of a 4-channel vehicle amplifier where each output channel needs independent fader adjustment. Four-channel volume and fader control replaces a bank of discrete attenuators and related routing hardware, while input-gain control prepares the selected signal for downstream amplification. The integrated loudness function adds another control stage without expanding the external component count. Because the processor is intended for car-audio environments, its 7 V to 9.5 V operating range fits conventional vehicle supply systems when the complete design applies suitable protection and grounding practices.
推薦
Radio and Auxiliary-Source Selector
A radio, media player, navigation-audio, and auxiliary-input product can use the BD37513FS-E2 to centralize source selection and level control. Three input selectors reduce the need for separate analog routing devices, while the main-volume and loudness stages provide consistent output adjustment across the selected source. The internal 2-band equalizer offers bass and treble control for different program material or speaker characteristics. I2C control is particularly valuable when the source-selection state must be synchronized with a head-unit display, steering-control interface, or system microcontroller.
推薦
Vehicle Navigation-Audio Interface
The BD37513FS-E2 can serve as the analog audio-control stage in a vehicle navigation system that mixes navigation prompts with radio or media playback. Its three input selectors allow navigation, radio, and another source to share a controlled output path. Main volume, loudness, and independent four-channel fader control let the system balance prompts and entertainment signals across the installed speaker arrangement. The built-in bass and treble equalizer provides an additional degree of adaptation to vehicle acoustics, while I2C control allows the vehicle controller to apply operating modes without discrete switches for every parameter.
推薦
Multi-Source Automotive Amplifier
The BD37513FS-E2 is appropriate for an automotive amplifier module that accepts several analog sources and feeds multiple speaker channels. The device's three input selectors, input-gain stage, and four-channel fader control provide a compact signal-conditioning path before power amplification. Its built-in bass and treble equalizer helps tune tonal response without separate passive filter networks, and the I2C interface supports coordinated settings from a vehicle audio controller. The 7 V to 9.5 V supply range suits conventional vehicle rails, subject to the full system's transient, ground, and thermal requirements.
推薦
Compact Automotive Sound-Control Module
The BD37513FS-E2 supports a dedicated sound-control module placed between source converters and output amplifiers. Such an architecture is useful when one central module must manage radio, navigation, and auxiliary inputs while preserving independent channel-level adjustment. Integrating the 2-band equalizer, loudness, main volume, and fader functions conserves PCB area and simplifies the control firmware compared with separate discrete stages. Its I2C bus is suitable for centralized register-based control, while the 20-SSOP-A package supports conventional surface-mount assembly. Final decoupling, grounding, and signal routing should follow the ROHM reference design.
推薦
推薦產品摘要
工程參考資料，適用於 BD37513FS-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 |
|---|---|
| Package | 20-SSOP-A |
| Brand | ROHM Semiconductor |
| Product Type | Sound processor with built-in 2-band equalizer |
| Channel Configuration | 4 channels |
| Supply Voltage Range | 7 V to 9.5 V |
| Control Interface | I2C |
| Input Selector Count | 3 inputs |
| Equalizer Bands | 2 bands |
| Independent Fader Channels | 4 channels |
| Tone Controls | Bass and treble |
| Primary Application | Car audio |
主要差異化特點
- Integrated car-audio control functions (對比BD37513FS-E2)
- Compact equalizer implementation (對比BD37513FS-E2)
- Host-controlled adjustment (對比BD37513FS-E2)
設計說明
Place the input, output, and supply bypass components in positions that minimize loop area around the BD37513FS-E2. Keep the 20-SSOP-A footprint unchanged and use the manufacturer application schematic as the basis for component placement. Verify the pin-1 orientation and the complete pin-description table before routing because an incorrect pad map can place power or I2C signals on incompatible pins.
Separate analog audio traces from digital I2C and control traces where practical. Use a continuous ground reference, avoid routing switching-converter paths beneath the sound processor, and keep input interconnects short and symmetric. The integrated equalizer reduces external tone components, but its benefit can be undermined by noisy supply or ground references; follow the ROHM layout recommendations when positioning the device relative to the power source and output stages.
Do not infer pin compatibility from a shared family name or package drawing. The I2C address, register map, analog signal levels, startup behavior, and control timing must match the exact ordering code before firmware is written. Likewise, confirm the 7 V to 9.5 V supply requirement at the device pins under transient and load conditions rather than assuming a nominal 12 V vehicle battery remains within range.
Use the manufacturer's recommended input and output network values when defining the audio path. The input-gain, loudness, equalizer, and fader stages interact acoustically and electrically, so changing source impedance or bypassing documented filters may alter noise, headroom, and channel balance. Validate the complete signal path with representative source impedances and target speaker loads instead of evaluating each control stage independently.
合規資訊
The product is identified as a car-audio sound processor, but exact ordering-code compliance and qualification statements were not established by the product-page summary. Review the ROHM ordering information and quality documentation for the BD37513FS-E2 variant.
