STA350BTR - 2-Channel 50W Digital Audio System | STMicroelectronics
MPN: STA350BTR ✓ Hoạt độngSTA350BTR Tóm tắt
A fully integrated digital audio system is a mixed-signal semiconductor category that combines an audio signal-processing path, digital control, and an efficient power-amplifier output stage. Within the broader hierarchy of audio ICs, interface ICs, and power-management devices, the STA350BTR is designed to reduce the component count and board area required by conventional digital Class-D audio solutions while maintaining digital control of the amplification stage.
The primary verified ratings are 50 W per channel at 6 ohms, a 2-channel configuration, and a 5 V minimum supply voltage. The device supports supply voltages up to 26 V, operates from -20°C to +85°C, and is supplied in a 36-terminal PowerSSO surface-mount package. Its integrated architecture is intended for applications where high-efficiency digital amplification and controlled sound output are required in the same package.
The STA350B family integrates digital audio processing, digital amplifier control, and an FFX-power output stage. This combination allows the controller and power-amplifier functions to reside on one device rather than requiring separate digital audio and analog-output blocks. That architectural consolidation can simplify board partitioning and provide a compact implementation for digital audio systems, although the complete pin assignments and detailed electrical characteristics are not present in the supplied source excerpts.
Typical uses include 2.1-channel sound terminals, powered speakers, compact home-audio systems, multimedia equipment, and other audio products requiring two amplified outputs. The 50 W per channel rating at 6 ohms makes the device relevant to consumer-audio products that need more power than a conventional integrated headphone amplifier can provide, while the 26 V maximum supply permits use in higher-voltage amplifier architectures when all electrical and thermal limits are observed.
A critical design consideration is heat management. The PowerSSO-36 package must dissipate the losses associated with high-power Class-D amplification, so exposed-pad layout, copper area, thermal vias, enclosure airflow, and clean speaker-filter selection can materially affect reliability. Designers should also confirm the complete pinout, acoustic tuning, digital interface configuration, and protection requirements against the manufacturer datasheet before layout release.
This page consolidates distributor availability, verified electrical limits, pricing information, replacement guidance, and practical engineering considerations. It distinguishes confirmed specifications from unavailable data and avoids presenting unverified pin assignments or unsupported cross-brand equivalents as drop-in replacements, helping engineers evaluate the STA350BTR with fewer sourcing and design risks.
Bộ thay thế dễ dàng lắp đặt cho STA350BTR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
STA350BW
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Xem tài liệu →STA350BTR Tỷ lệ tối đa & tính chất điện
| Device Type | Fully integrated digital audio system processor |
| Audio Channel Count | 2 channels |
| Output Power | 50 W per channel at 6 ohms |
| Minimum Supply Voltage | 5 V |
| Maximum Supply Voltage | 26 V |
| Minimum Operating Temperature | -20°C |
| Maximum Operating Temperature | +85°C |
| Hộp | PowerSSO-36 |
| Terminal Count | 36 terminals |
| Kiểu lắp đặt | SMD/SMT surface mount |
| Output Stage | Integrated high-efficiency FFX-power output stage |
| Digital Audio Processing | Integrated |
| Digital Amplifier Control | Integrated |
| Amplifier Configuration | 2-channel, 2.1-channel sound-terminal application |
| Shipping Packaging | Cut tape and reel |
| Distributor Stock Signal | 32850 pieces reported updated 2026-06-01 |
| Minimum Price | USD 1.3782 as of 2026-10-29 |
Hướng dẫn cấu hình chân STA350BTR powersso-36
Cấu hình chân cho STA350BTR (powersso-36 gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho STA350BTR.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
STA350BTR phù hợp cho 6 Áp dụngs: 2.1-Channel Sound Terminal, Powered Speaker Amplifier, Compact Home-Audio System, Multimedia Speaker System, Industrial Audio Equipment, Portable High-Efficiency Audio.
2.1-Channel Sound Terminal
The STA350BTR is specifically identified as a 2.1-channel digital audio system, making it suitable for compact sound-terminal products that combine two main channels with a subwoofer path. Its two-channel 50 W-per-class output capability at 6 ohms provides substantially more speaker drive than a conventional integrated audio amplifier, while the integrated digital processing and FFX-power stage reduce the number of separate functional blocks. The 5 V to 26 V supply range also provides flexibility for internal amplifier rails, although exact subwoofer topology, filtering, and thermal performance must be verified against the manufacturer design guidance.
Được đề xuất
Powered Speaker Amplifier
The STA350BTR fits powered-speaker electronics that require two high-power outputs in a surface-mount implementation. At up to 50 W per channel into 6 ohms, it is relevant to compact stereo speakers, active bookshelves, and multimedia speaker enclosures where an external heat sink or class-D output stage would increase board complexity. Because the verified package includes an exposed thermal region for heat removal, the design must provide continuous copper and thermal vias. The 26 V maximum supply also requires careful protection and transient design.
Được đề xuất
Compact Home-Audio System
A compact home-audio product can use the STA350BTR when its two internal amplified channels must be driven by a digital audio source. The integrated digital processing, amplifier control, and FFX-power output stage support a consolidated signal path, while the 6-ohm, 50 W-per-channel capability targets passive speakers rather than headphones or line-level outputs. Engineers should budget output-filter components, verify the digital interface protocol, and model amplifier losses before finalizing the enclosure. The -20°C to +85°C operating range covers many indoor consumer environments.
Được đề xuất
Multimedia Speaker System
The STA350BTR is appropriate for multimedia speaker systems where digital audio processing and efficient two-channel amplification must coexist on a constrained PCB. Its integrated architecture can reduce external control and output-stage complexity, while the 5 V minimum supply supports use in systems built around a 5 V-class power architecture. For USB, network, or wireless audio sources, the digital interface still requires correct clocking, format, and software support. Acoustic tuning, speaker impedance, and the output-power thermal envelope should be confirmed before production.
Được đề xuất
Industrial Audio Equipment
The STA350BTR can serve as the amplified output stage in industrial audio equipment that needs two loudspeaker channels and digital control. Its surface-mount PowerSSO-36 package supports compact, automated assembly, while the 26 V supply ceiling accommodates higher-voltage internal rails. Industrial use still requires attention to conducted noise, grounding, output filtering, and enclosure heat dissipation, particularly when sustained output approaches 50 W per channel. Digital control should include startup mute and fault handling to prevent uncontrolled transients across multiple powered audio nodes.
Được đề xuất
Portable High-Efficiency Audio
The integrated digital and power-stage architecture of the STA350BTR may support portable audio products where component count and conversion efficiency are priorities. Its 5 V minimum operating supply can align with a 5 V-class internal rail, and the two-channel output topology is suitable for small stereo or connected-speaker configurations. Battery-powered designs must account for output current, conversion loss, thermal rise, and the time spent at high listening levels. The absence of verified battery-specific protection ratings in the supplied excerpts means a portable design should not infer qualification from the consumer-audio description alone.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho STA350BTR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | STA350BW |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | PowerSSO-36 | PowerSSO-36 |
| Replacement Qualification | Original specified device | Pin-compatible Sound Terminal successor; firmware and analog front-end matching may be required |
Bảo phân biệt quan trọng
- Documented two-channel power capability (vsSTA350BW)
- Defined supply operating range (vsSTA350BW)
- Verified digital sound-terminal positioning (vsSTA350BW)
Ghi chú thiết kế
Treat the PowerSSO-36 exposed region as the primary thermal path. At high output power, provide uninterrupted ground-plane copper beneath the device, multiple thermal vias into inner layers, and an enclosure path that removes heat rather than trapping it. The verified 50 W-per-channel figure is an output rating, not a guarantee that every board can sustain it continuously. Validate junction temperature, copper geometry, speaker impedance, and ambient conditions in the final mechanical enclosure.
Keep the power stage, output-filter network, speaker connections, and decoupling current paths compact and electrically separated from digital audio and control traces. The supplied excerpts confirm a 36-terminal PowerSSO package but do not provide the individual pin map, so the manufacturer land pattern and reference layout must govern placement. Do not infer exposed-pad connectivity or terminal assignments from package position alone; verify every connection against the current datasheet revision.
Do not treat STA350BW as an automatic substitute merely because it is described as pin-compatible. The verified cross-reference excerpt explicitly warns that firmware may require rewriting and the analog front end may need matching. Before releasing a replacement BOM, compare pin voltages, digital audio formats, clocking, output filters, protection behavior, thermal limits, and acoustic tuning. A shared package provides a useful starting point but does not prove equivalent firmware or signal behavior.
Thông tin tuân thủ
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is marked not applicable because this product is presented as a consumer-oriented audio device and no automotive qualification was identified.
