STA333W13TR - 2-Channel 20V DDX Audio Amplifier | STMicroelectronics
MPN: STA333W13TR ✓ نشطSTA333W13TR نظرة عامة
A digital audio system combines digital signal processing, digital-to-analog conversion, and power-amplifier control into one integrated circuit. The STA333W13TR accepts digital audio data, performs the required signal conditioning and modulation, and drives stereo speakers through its integrated Class-D-style DDX output stage. This integration reduces the number of separate audio-processing and amplification blocks required in compact consumer equipment.
Two power-output configurations are available, supporting two channels of binary PWM in stereo mode or two channels of ternary PWM. Binary PWM provides a conventional two-level drive, while ternary PWM can reduce switching-related distortion and improve efficiency in suitable amplifier architectures. The 24-bit processing path and 100 dB SNR provide ample headroom for high-fidelity consumer audio systems.
The 32 kHz to 192 kHz input-rate range supports standard digital-audio sources through high-resolution playback systems. The integrated architecture avoids the signal-path mismatch and additional conversion stages that can arise when a digital audio processor and a separate power amplifier are combined. The STA333W13TR is particularly relevant where stereo playback, digital input, compact PCB area, and energy-efficient amplification are priorities.
Typical uses include compact stereo speakers, home-audio systems, sound bars, portable entertainment equipment, and consumer audio products with digital signal sources. Its PowerSSO-36 EPD package requires careful PCB layout and adequate thermal design because the integrated output stage dissipates power during operation. The supply rails and output-filter requirements should be implemented according to the manufacturer’s reference circuit.
For robust deployment, use short, wide power-loop paths, place input and output capacitors close to their intended terminals, and verify thermal performance at the maximum expected channel output power. Keep sensitive digital and analog routing away from high-current switching nodes. This page summarizes the core architecture, operating ranges, package information, application guidance, and replacement considerations for faster engineering evaluation.
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اطلب بدائلSTA333W13TR الحدود القصوى والخصائص الكهربائية
| Product Type | 2-channel high-efficiency digital audio system Sound Terminal |
| Channel Count | 2 channels |
| Maximum Supply Voltage | 20 V |
| Low Supply Voltage | 3.3 V |
| High Supply Voltage | 18 V |
| Digital Audio Resolution | 24 bit |
| Signal-to-Noise Ratio | 100 dB |
| Dynamic Range | 100 dB |
| Input Sample Rate Range | 32 kHz to 192 kHz |
| Power Output Configuration Count | 2 configurations |
| Stereo Modulation Mode | 2 channels of binary PWM |
| Ternary Modulation Mode | 2 channels of ternary PWM |
| Output Stage Technology | DDX integrated power output stage |
| العلبة | PowerSSO-36 EPD |
| Terminal Count | 36 terminals |
| نوع التركيب | Tape and reel surface mount |
| Maximum Operating Temperature | 70 °C |
| حالة RoHS | Compliant |
دليل تكوين أطراف STA333W13TR powersso-36 epd
تكوين الأطراف لـ STA333W13TR (حزمة powersso-36 epd). يتميز هذا المكوّن التناظري بأطراف الإدخال والإخراج وإمداد الطاقة. راجع ورقة بيانات الشركة المصنعة لتكوينات طرف إلغاء الإزاحة والتعويض والتمكين. مثالي لدوائر تكييف الإشارة والمضخمات.
لا تتوفر بيانات مفصلة لمخطط التوصيلات لـ STA333W13TR.
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التطبيقات النموذجية
STA333W13TR مناسب لـ 6 التطبيقs: Compact Stereo Speaker, Home Audio System, Sound Bar, Digital Active Speaker, Portable Entertainment Equipment, Consumer Audio USB Interface.
Compact Stereo Speaker
The STA333W13TR fits a compact stereo speaker driven by a digital audio source because it combines a 24-bit processing path, two-channel DDX output, and 100 dB SNR in one PowerSSO-36 EPD device. The system can use two binary-PWM channels in stereo mode or select ternary PWM for a three-level switching waveform when the recommended filter network and efficiency target support it. Its 32 kHz to 192 kHz input-rate range accommodates common playback formats. Board design should prioritize a short supply path, symmetrical speaker outputs, robust return-current routing, and thermal vias beneath the slug-down pad.
موصى به
Home Audio System
The STA333W13TR is suitable for a two-channel home-audio product requiring digital processing and amplification in a single device. Its stated 100 dB SNR and dynamic range provide a useful margin for music playback, while the integrated DDX stage removes the need for a separate power-amplifier IC in conventional two-speaker arrangements. Select the output configuration and filter values from the manufacturer reference design, and calculate heat dissipation across the full playback duty cycle. A symmetrical PCB layout also helps preserve channel matching and reject noise coupled from switching currents.
موصى به
Sound Bar
A sound bar benefits from the STA333W13TR because one IC can provide digital audio processing and two-channel DDX amplification while accepting sample rates from 32 kHz to 192 kHz. Binary PWM supports conventional stereo operation, while ternary PWM can be evaluated for lower switching activity and improved amplifier efficiency. In a sound bar, preserve adequate copper around the exposed thermal pad and isolate sensitive digital routing from high-current output paths. Follow the manufacturer’s recommended LC output network and verify filter stability with the intended speaker impedance and cable length.
موصى به
Digital Active Speaker
The STA333W13TR can form the amplification core of a digital active speaker because it combines a 24-bit digital path, selectable 32–192 kHz input rates, and two integrated output channels. The device is particularly useful when the design goal is to reduce external signal-chain components while retaining digital control over the audio output. Choose binary or ternary PWM according to the required EMI, filter, and efficiency characteristics. Place the exposed-pad thermal structure directly beneath the IC, provide low-impedance supply connections, and validate speaker loading because filter selection and amplifier stability depend on the final impedance network.
موصى به
Portable Entertainment Equipment
The STA333W13TR can support portable entertainment products that require efficient digital amplification and a compact component count. Its 3.3 V low-supply option is relevant to compact systems, while the broader 20 V maximum rating supports higher bus voltages in other product variants and implementations. Selection must account for the complete electrical limits in the manufacturer datasheet rather than assuming all family ratings apply identically to every operating mode. The integrated architecture saves board area, but power-loss analysis remains essential because DDX output efficiency depends on modulation mode, load, and output filtering.
موصى به
Consumer Audio USB Interface
The STA333W13TR can complement a USB-controlled consumer audio path by accepting processed digital audio and providing the two-channel power output stage. The 192 kHz maximum selectable input rate supports high-resolution playback streams, while the 24-bit processing capability and 100 dB SNR suit low-distortion consumer applications. Keep the USB data and audio clocks on controlled impedance routes, isolate them from switching-node current, and use the manufacturer’s power-up sequence to prevent interface instability. Thermal verification should cover continuous high-volume playback because this condition can be harsher than short audio transients.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ STA333W13TR — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
The primary selection trade-off is integration versus design flexibility. A discrete digital processor and power amplifier can offer independent component choices and tailored analog circuitry, but it requires more board area, additional interface design, and careful matching between the processor and amplifier. STA333W13TR simplifies that partition and provides a 100 dB stated SNR, yet the implementation remains sensitive to output-filter selection, PCB return paths, exposed-pad thermal design, and speaker loading. Use a discrete architecture when independent upgrade paths or unusual output configurations outweigh the benefits of a single integrated solution.
المقارنة مع البدائل
| المعامل | هذا المنتج |
|---|---|
| Brand | STMicroelectronics |
| Package | PowerSSO-36 EPD |
| Product Type | 2-channel high-efficiency digital audio system Sound Terminal |
| Channel Count | 2 channels |
| Digital Audio Resolution | 24 bit |
| SNR | 100 dB |
| Dynamic Range | 100 dB |
| Input Sample Rate Range | 32 kHz to 192 kHz |
| Supply Voltage | 3.3 V and 18 V rails; 20 V maximum |
| Modulation Modes | Binary PWM and ternary PWM |
أبرز الفروقات
- Integrated digital processing and power amplification (مقابلDiscrete digital audio processor and class-D amplifier architecture)
- Dual PWM implementation options (مقابلBinary-PWM-only two-channel amplifier)
- Broad digital sampling-rate range (مقابلFixed-rate digital amplifier)
- High signal-to-noise performance (مقابلLower-performance integrated consumer audio amplifier)
ملاحظات التصميم
Use the exposed thermal pad as the primary heat path from the integrated output stage. Place thermal vias near the pad, retain manufacturer-recommended pad geometry, and connect the pad to a copper region with minimal interruption. Estimated thermal calculations should use the actual channel dissipation, ambient temperature, and PCB copper area; do not infer junction temperature from package size alone.
Keep input, supply, and output-filter components close to their associated pins, and minimize loop area in the high-current switching paths. Route speaker outputs as a short differential pair and keep the exposed-pad region free of signal traces. Use a continuous ground reference and observe the manufacturer’s recommended component placement to preserve amplifier stability.
Separate digital audio clocks and data routing from DDX switching-node current, then return both digital and power grounds according to the reference layout. Confirm the output LC filter against the selected speaker impedance and cable characteristics. Binary and ternary PWM modes have different switching waveforms and harmonic content, so EMI filtering must be validated in the final enclosure rather than assumed from schematic review.
Do not treat every STA333W family member as an interchangeable drop-in device. Confirm the exact STA333W13TR ordering code, PowerSSO-36 EPD land pattern, exposed-pad connection, supply sequencing, digital interface, and output-filter requirements. Also verify the complete temperature range and maximum output-power limits in the manufacturer datasheet for the production operating environment.
معلومات الامتثال
The product listing identifies the PowerSSO-36 EPD device as RoHS compliant. No additional compliance declarations are included in the manufacturer information.
