STA350BWTR - 36W 2.1-Channel Audio System | STMicroelectronics
部品番号: STA350BWTR ✓ 生産中STA350BWTR 概要
An integrated digital audio system combines several functions that are otherwise implemented as separate signal-chain blocks. These functions include digital audio processing, digital amplifier control, and the power-output stage. The STA350Bx family therefore belongs to the amplifier-IC and power-management-IC hierarchy while specifically serving powered-speaker and consumer-audio applications.
The STA350BWTR is presented as a 2.1-channel solution with two-channel capability. Verified specifications are defined at a supply voltage of 24 V, a test frequency of 1 kHz, a switching frequency of 384 kHz, an ambient temperature of 25 °C, and an 8 Ω load unless otherwise specified. The listed 36 W output capability and high-efficiency architecture suit compact powered-speaker systems where useful acoustic output must be obtained from a limited power budget.
The integrated digital processing and amplifier-control functions reduce the amount of external circuitry required compared with a discrete approach. The 384 kHz switching frequency identifies the device as a digitally controlled audio power system rather than a conventional analog-output amplifier. The 2.1-channel format supports common stereo-speaker arrangements augmented by a subwoofer, while the integrated FFX-power output stage provides the final power-conversion function.
Typical uses include powered stereo speakers, multimedia speaker systems, compact home-audio products, sound bars, and other consumer systems requiring efficient digital audio amplification. The exposed-pad PowerSSO-36 package is particularly relevant to designs where heat removal from the power stage is a central PCB-layout concern.
Designers should follow the manufacturer datasheet for the exact pin assignments, exposed-pad connection, input configuration, control interface, filtering requirements, and recommended external components. Thermal performance depends strongly on PCB copper area, the exposed-pad layout, enclosure heat dissipation, output level, load impedance, and the 24 V operating condition used for the stated specifications.
This page consolidates the verified manufacturer and distributor information for STA350BWTR, including the published test conditions, package identification, price reference, product positioning, and practical selection considerations. It also distinguishes documented facts from parameters that still require confirmation from the complete manufacturer datasheet or an authorized source.
ドロップイン代替品: STA350BWTR — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストSTA350BWTR 最大定格＆電気的特性
| Product Type | 2.1-channel high-efficiency digital audio system |
| Manufacturer | STMicroelectronics |
| 出力構成 | 2-channel |
| Channel Arrangement | 2.1-channel |
| Output Power | 36 W |
| Amplifier Class | Class-AB |
| Architecture | Integrated digital audio processing, digital amplifier control, and FFX-power output stage |
| Test Supply Voltage | 24 V |
| Test Frequency | 1 kHz |
| スイッチング周波数 | 384 kHz |
| Test Ambient Temperature | 25 °C |
| Test Load Impedance | 8 Ω |
| パッケージ | 36-pin PowerSSO with exposed pad |
| Package Family | PowerSSO-36 |
| 実装タイプ | Surface Mount |
| Order Code | STA350BWTR |
STA350BWTR powersso-36 ピン配置ガイド
STA350BWTR (powersso-36 パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: STA350BWTR.
詳細は データシート をご参照ください。
主な用途
STA350BWTR の用途: 6 件s: Powered Stereo Speakers, Multimedia Speaker Systems, Compact Home Audio Systems, Sound Bar Speaker Modules, Powered Subwoofer Platform, Digital Audio Control System.
Powered Stereo Speakers
The STA350BWTR is suitable for a powered stereo-speaker platform because it combines digital audio processing, digital amplifier control, and an FFX-power output stage in one 36-pin PowerSSO device. Its two-channel format can support left and right speaker drives, while the published 36 W rating provides a defined starting point for enclosure and power-supply design. The 24 V, 1 kHz, 384 kHz, 25 °C, and 8 Ω manufacturer test conditions must be reproduced when comparing real acoustic output. Place input, control, and output components according to the manufacturer application diagram, and allocate sufficient exposed-pad copper for the integrated power stage.
おすすめ
Multimedia Speaker Systems
A multimedia speaker system benefits from the STA350BWTR because the device integrates the digital audio-processing and power-amplification functions needed to convert a digital source into speaker drive. Its high-efficiency 2.1-channel architecture is appropriate when a stereo pair must operate alongside a subwoofer or bass channel without a large collection of separate amplifier ICs. The published 36 W specification is tied to an 8 Ω load and 24 V supply, so designers should calculate worst-case output power rather than assume the rating applies to every impedance. Digital interface filtering, speaker protection, thermal management, and the exposed-pad land pattern remain critical implementation details.
おすすめ
Compact Home Audio Systems
The STA350BWTR can support compact home-audio products that require efficient digital amplification in a constrained enclosure. Integrating audio processing, digital amplifier control, and the FFX-power output stage reduces the number of discrete functional blocks and can simplify the overall signal-chain architecture. The 36-pin PowerSSO exposed-pad package supports surface-mount assembly, although it requires deliberate copper and enclosure heat-flow design. The verified 36 W output figure applies at the stated 24 V and 8 Ω conditions, making rail capability, speaker impedance, and thermal headroom central to a reliable implementation.
おすすめ
Sound Bar Speaker Modules
The STA350BWTR is appropriate for a sound-bar speaker module where a 2.1-channel architecture combines stereo outputs with a bass channel. Its integrated digital processing and amplifier-control functions can reduce module complexity compared with separate processors and output stages. The 384 kHz switching frequency and 36 W published rating provide useful design context, but actual channel allocation and crossover behavior must be established from the manufacturer documentation. Layout should isolate sensitive digital and audio inputs from the high-current output section while providing uninterrupted thermal copper beneath the exposed pad.
おすすめ
Powered Subwoofer Platform
The STA350BWTR can be considered for a powered subwoofer platform that participates in a 2.1-channel audio system. Its integrated digital amplifier control and FFX power stage support a compact speaker-electronics design, while the published 36 W rating identifies the output class targeted by the product family. Because the verified specifications use an 8 Ω load and 24 V supply, subwoofer impedance, excursion limits, and amplifier damping requirements must be checked independently. Thermal design should account for continuous low-frequency output, which can create significant heat even when the audio signal itself contains relatively little high-frequency energy.
おすすめ
Digital Audio Control System
The STA350BWTR fits digital audio control systems in which processing, amplification control, and output-stage operation need to be coordinated inside a dedicated audio IC. Its 384 kHz switching frequency and integrated FFX output architecture distinguish it from a simple analog audio amplifier, making the complete signal path and control documentation essential during design-in. Engineers should review clocking, data format, filtering, gain configuration, and protection requirements in the official datasheet. The exposed-pad package also makes thermal verification an essential part of system integration rather than a final mechanical check.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: STA350BWTR — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 |
|---|---|
| Brand | STMicroelectronics |
| Package | 36-pin PowerSSO with exposed pad |
| Product Type | 2.1-channel high-efficiency digital audio system |
| Output Power | 36 W |
| Amplifier Class | Class-AB |
| Channel Capability | 2-channel in a 2.1-channel system |
| Test Supply Voltage | 24 V |
| Switching Frequency | 384 kHz |
| Test Load | 8 Ω |
| Listed Unit Price | $1.5705 as of 2026-10-29 |
主な差別化要因
- Integrated 2.1-channel digital audio processing and power amplification （vs Discrete amplifier solution)
- Defined high-power audio operating point （vs Lower-power audio amplifier option)
- Purpose-built powered-speaker integration （vs General-purpose analog audio amplifier)
設計ノート
Design the exposed-pad land pattern and copper area before placing the surrounding analog, digital, and power components. The published 36 W specification is tied to VCC = 24 V, f = 1 kHz, fsw = 384 kHz, Tamb = 25 °C, and RL = 8 Ω, so it must not be treated as a universal thermal rating. Evaluate worst-case continuous power dissipation, ambient temperature, output waveform, load impedance, and enclosure heat flow. Use the manufacturer thermal data and measured board conditions rather than relying on package wattage alone.
Implement the official STA350BW reference layout and preserve the exposed-pad connection under the PowerSSO-36 package. Place the required input, output, filtering, and decoupling components at the locations and with the values specified by STMicroelectronics. Keep high-current output routing physically separate from sensitive digital and audio inputs, use short return paths, and provide continuous ground-plane copper where compatible with the recommended layout. Validate creepage, clearance, thermal-via count, and assembly restrictions using the complete package drawing.
Do not infer the complete pinout, input format, maximum control voltage, or protection behavior from the distributor summaries. Confirm pin assignments and electrical limits in the official STA350BW datasheet, especially because the exposed pad can be a thermal, power, or functional connection depending on the device configuration. Also avoid applying the 36 W figure at loads other than the specified 8 Ω without checking thermal and electrical limits; impedance changes can affect output power, stability, and speaker safety.
Treat the digital audio interface as a sensitive signal path even though the IC also contains a power-output stage. Use short, continuous traces, provide the manufacturer-specified bypass capacitance, and observe any clocking or data-valid timing requirements in the timing diagrams. If analog feedback or filtering is used, maintain the documented component tolerances and placement because those networks can influence loop stability and channel balance. Verify the finished design for oscillation, EMI, channel imbalance, and clicks at startup or mute transitions.
コンプライアンス情報
The verified web excerpts do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for STA350BWTR. These fields remain unknown rather than inferred.
