STA333BW13TR - 40W 2.1-Channel Digital Audio | ST
料号： STA333BW13TR ✓ 量产中STA333BW13TR 概述
A digital audio amplifier is a power-management IC that accepts digital audio information and drives loudspeakers through internal switching power stages. Within the broader hierarchy, it combines digital signal processing, an audio amplifier, and a Class-D-style power conversion function. This integration reduces the number of separate digital-input, control, and output-stage components required in a loudspeaker design.
The STA333BW13TR provides three channels of FFX processing, allowing two primary channels and a subwoofer channel to be handled within one audio system. The manufacturer describes the device as a fully integrated processor rather than a conventional analog audio amplifier. Its listed 100 dB SNR identifies the signal-to-noise performance class associated with the 2.1-channel 40 W configuration.
Technical implementation is centered on the integrated FFX signal path, digital amplifier controls, and onboard power output stages. This architecture is intended to support high-efficiency digital amplification while simplifying source control. Because the device combines multiple functions, PCB design must treat the power, signal, control, and exposed thermal-pad connections as one integrated audio subsystem rather than as separate analog amplifier blocks.
Typical uses include compact active speakers, multimedia speaker systems, home-audio products, soundbars, computer audio, and other 2.1-channel consumer equipment. The 40 W capability is particularly relevant where stereo playback must be combined with a subwoofer channel in one compact enclosure. The PowerSSO-36 EPD package also supports PCB-level thermal management through its exposed pad.
When laying out the device, follow the pin-description table and recommended application circuit in the manufacturer datasheet. Keep high-current output connections compact, provide clean input and control routing, and thermally couple the exposed pad to a suitable copper area. The exact supply limits, output configurations, and protection thresholds should be confirmed against the manufacturer datasheet before final schematic release.
This product reference combines the verified operating class, output class, channel count, processing architecture, package, and sourcing links with practical application and layout guidance. It also identifies the key replacement question engineers face when evaluating the STA333BW base family designation against the orderable STA333BW13TR version.
直接替换替代料： STA333BW13TR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
STA333BW
✅ 直接替换📋 参考替代料（不在目录中）
STA333BW13TR 最大额定值与电气特性
| Product Type | Fully integrated digital audio processor |
| 输出配置 | 2.1 channels |
| Maximum Output Power | 40 W |
| Signal-to-Noise Ratio | 100 dB |
| Processing Architecture | FFX processing, 3 channels |
| Integrated Functions | Digital audio processing, digital amplifier controls, and power output stages |
| 封装 | PowerSSO-36 EPD |
| 安装类型 | Surface mount |
| Product Family | Sound Terminal |
| Efficiency Class | High-efficiency digital amplification |
| Channel Count | 3 processed channels |
| Supplier Category | Audio Special Purpose |
STA333BW13TR powersso-36 epd 引脚配置指南
STA333BW13TR（powersso-36 epd 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： STA333BW13TR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STA333BW13TR 适用于 6 应用s: Compact Active Speakers, Home Theater Soundbar, Multimedia Speaker System, Computer Audio Amplification, Digital Audio Power Module, Consumer Soundbar Subwoofer.
Compact Active Speakers
The STA333BW13TR fits compact active-speaker designs that require stereo playback and a subwoofer output in one digital amplifier stage. Its verified 2.1-channel architecture and three FFX processing channels allow a product to combine two main channels with one low-frequency channel without implementing those processing paths as separate ICs. The listed 40 W output class targets consumer speaker power levels, while the 100 dB SNR specification supports clean signal reproduction. Confirm the required speaker impedance, channel-power limits, crossover arrangement, and supply limits against the manufacturer datasheet before assigning the output network.
推荐
Home Theater Soundbar
The STA333BW13TR is suitable for a soundbar architecture requiring left, right, and subwoofer amplification from a compact PCB. Its 2.1-channel configuration and three FFX processing paths align with the common soundbar arrangement, while the integrated digital audio processing, amplifier control, and power stages reduce the number of separate functional blocks. The 40 W device class can support powered left and right channels plus a dedicated bass channel. The enclosure design must account for heat spreading from the PowerSSO-36 EPD exposed pad, and the crossover and limiter settings should follow the manufacturer application guidance.
推荐
Multimedia Speaker System
The STA333BW13TR fits a desktop or living-room multimedia speaker system where a digital source must drive stereo speakers and an optional subwoofer. Its three FFX channels consolidate the main stereo and subwoofer paths, and the listed 100 dB SNR provides a defined signal-to-noise target for a consumer audio system. The 40 W output class offers a practical path for efficient powered-speaker designs. Designers should still verify thermal performance at the intended supply voltage and load, preserve clean digital routing, and select output capacitors and speaker protection according to the manufacturer reference circuit.
推荐
Computer Audio Amplification
The STA333BW13TR can serve as the integrated output stage in a computer or display audio product requiring two full-range channels and a subwoofer. Its digital audio processing, amplifier control, and power output stages support a unified design rather than separate codec and amplifier blocks. The 2.1-channel, 40 W configuration matches compact entertainment systems, while the PowerSSO-36 EPD package limits board area compared with multiple discrete functions. Validate low-frequency behavior with the selected subwoofer, maintain adequate exposed-pad copper, and follow the recommended decoupling and output-filter layouts in the manufacturer datasheet.
推荐
Digital Audio Power Module
The STA333BW13TR is appropriate as a dedicated digital audio power module in a multi-board consumer-audio architecture. Because the IC integrates FFX processing, digital amplifier controls, and power output stages, it can concentrate the power-conversion section on one PCB while a separate interface device handles source-format conversion. The three-channel processing capability supports 2.1 audio, and the 40 W device class provides useful output headroom for powered speakers. System partitioning should preserve short output-current paths, isolate sensitive digital controls from switching return currents, and provide adequate thermal coupling between the EPD and the PCB copper area.
推荐
Consumer Soundbar Subwoofer
The STA333BW13TR can support a consumer soundbar or compact stereo system requiring a dedicated subwoofer channel. The third FFX processing path allows the low-frequency channel to be managed within the same integrated digital audio processor as the stereo outputs, simplifying the signal-chain architecture. Its 40 W 2.1-channel description makes it suitable for evaluating efficient class-amplified consumer products. The system integrator should confirm the bass-channel power rating, configure crossover and gain structure correctly, and monitor thermal performance because sustained bass loading can increase dissipation and stress the PowerSSO-36 EPD exposed pad.
推荐
推荐产品汇总
工程参考数据： STA333BW13TR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | STA333BW |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | PowerSSO-36 EPD | PowerSSO-36 EPD |
关键差异点
- Complete 2.1-channel digital audio integration （对比 STA333BW)
- Integrated processing and power stages （对比 STA333BW)
- Defined signal-to-noise performance （对比 STA333BW)
设计说明
Use the exposed pad of the PowerSSO-36 EPD as the primary thermal path. Place a continuous PCB copper area beneath the package and connect it to the ground structure with short, low-inductance vias as directed by the manufacturer layout. Validate the design with the worst-case channel loading, enclosure temperature, supply voltage, and sustained-output condition. Do not use the nominal 40 W device rating as proof that every channel can operate continuously at 40 W.
Separate digital audio inputs and control signals from loudspeaker output-current paths on the PCB. Keep the output connections compact, provide the shortest practical return path for switching currents, and prevent output-node copper from running beneath sensitive input areas. Apply the manufacturer reference layout for input, output, decoupling, and exposed-pad connections. Check every numbered pin against the PowerSSO-36 pin-description table before releasing artwork.
Choose the supply, output filters, load network, and protection components using the electrical limits in the manufacturer datasheet. The 2.1-channel architecture may require independent confirmation of stereo-channel and subwoofer-channel power conditions. Avoid sharing narrow return paths among power-output stages, and use the recommended local input and output capacitance. Speaker wiring should be kept away from audio and control traces to reduce differential pickup and switching-induced interference.
合规信息
The verified product information identifies a consumer audio Special Purpose IC and does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is treated as not applicable because the part is not identified as an automotive-qualified device.
