My Inquiry
My Account
STMicroelectronics STA369BWS
- Part No.:
- STA369BWS
- Manufacturer:
- STMicroelectronics
- Category:
- Audio Special Purpose
- Package:
- 36-PowerBFSOP (0.295", 7.50mm Width)
- Datasheet:
-
STA369BWS.pdf
- Description:
- 2.1-CHANNEL 40-W HIGH-EFFICIENCY
- Quantity:
- Payment:
- Shipping:
Inventory:3,605
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STA369BWS from STMicroelectronics is a 2.1-channel, 40-watt high-efficiency digital audio system-on-chip (SoC) implementing FFX™ and F3X™ PWM modulation. It integrates digital signal processing (DSP), dual-band DRC, 15 preset crossover filters, and LFE-specific bass boosting. Delivers 2 × 9 W into 4 Ω + 1 × 20 W into 8 Ω at 18 V in binary PWM mode for compact active speaker and soundbar applications.
For engineers reviewing the STA369BWS datasheet, STA369BWS pinout, STA369BWS application, or STA369BWS equivalent, this page provides verified technical context on its ternary/binary PWM output configurations, I²C-configurable DRC/EQ architecture, thermal protection implementation, and PowerSSO-36 EPD package layout - all critical for audio subsystem integration and BOM validation.
Technical Context
The STA369BWS implements a fully integrated digital audio terminal with three configurable power output modes: dual-channel ternary PWM (2×20 W @ 8 Ω), ternary stereo line-out, or 2.1-channel binary PWM with dedicated LFE path. Its 96-kHz internal processing engine supports quantization error noise shaping and extended filter dynamics (±4 range) for precise low-frequency response control.
It features two independent DRC engines configurable as dual-band anti-clippers (B2DRC) or separate limiters/compressors, plus EQ-DRC that applies DRC to filtered signals. Audio processing includes selectable 32–192 kHz I²S input, programmable biquad filters (up to 8 per channel), and F3X™ carrier-suppression modulation for headphone/line outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 2.1-channel (L/R/LFE) with configurable ternary or binary PWM output modes |
| Max Output Power | 2 × 9 W into 4 Ω + 1 × 20 W into 8 Ω at 18 V (binary PWM mode) |
| SNR / Dynamic Range | 100 dB - enables high-fidelity playback without audible quantization noise in consumer audio systems |
| Input Sample Rate | 32–192 kHz I²S - supports CD, DVD-Audio, and high-res streaming formats |
| DSP Resources | Up to 8 user-programmable biquads/channel + 3 coefficient banks for fast EQ preset recall |
| Control Interface | I²C with selectable device address - allows multi-device configuration in shared bus systems |
| Supply Voltage Range | 4.5 V to 21.5 V - accommodates wide-input DC-DC supplies in automotive and portable designs |
Pinout & Package
STA369BWS is housed in PowerSSO-36 EPD (Exposed Pad Down), a thermally enhanced surface-mount package with 36 leads and an exposed thermal pad on the underside for PCB heat dissipation. The package supports high-power audio operation with embedded thermal overload and short-circuit protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDPWR | Main power supply input | Accepts 4.5–21.5 V; powers internal Class-D output stage and gate drivers |
| VDDIO | Digital I/O supply | 3.3 V supply for I²C, I²S, and register interface logic |
| SDA / SCL | I²C bidirectional data/clock | Configures DSP parameters, DRC, EQ, volume, and operating modes |
| LRCK / BCLK / DIN | I²S audio interface inputs | Supports left/right frame sync, bit clock, and serial audio data up to 192 kHz |
| OUTL / OUTR / OUTLFE | Class-D PWM output terminals | Drive external LC filters to speakers; support 2.1-channel binary or ternary PWM topologies |
| PGND / AGND | Power and analog ground returns | Separate ground paths minimize noise coupling between digital and power sections |
| EPAD | Thermal pad (exposed) | Must be soldered to large PCB copper area for thermal management and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| F3X™ advanced PWM modulation | Carrier suppression optimized for headphone/line outputs - reduces EMI without external filtering |
| Dual-band DRC (B2DRC) | Independent high- and low-frequency limiting prevents clipping while preserving transient detail |
| LFE-specific processing | Dedicated 0.125-dB-step gain control and bass-boost EQ for subwoofer channel tuning |
| Extended filter dynamics (±4) | Enables steeper roll-off and tighter crossover slopes without coefficient overflow in biquad filters |
| AM interference suppression | Selectable switching frequencies and noise-shaping topologies mitigate AM radio band interference |
| Video-compatible mode | 576 × fS input mode supports audio synchronization with video timing in multimedia systems |
Applications
| Active Soundbars | Compact Home Theater Systems |
|---|---|
Use Scenario: Integrated 2.1-channel audio solution in slim-profile soundbars with built-in subwoofer output. IC Role / Device Role / Timing Role: Audio SoC handling digital input decoding, DSP-based bass management, and direct PWM drive to midrange/tweeter and subwoofer amplifiers. Use Value: Eliminates need for external DAC, DSP, and multiple amplifier ICs - reduces BOM count and PCB area by >40%. |
Use Scenario: All-in-one audio processor for entry-level 2.1 home theater receivers with HDMI ARC or optical input. IC Role / Device Role / Timing Role: Central audio hub performing sample rate conversion, dynamic range compression, and channel mapping for multi-source playback. Use Value: Supports night-mode presets and anti-clipping across variable content loudness - improves consistent listening experience. |
| USB-C Powered Speakers | Automotive Rear-Seat Entertainment |
Use Scenario: Portable powered speakers drawing power and audio via USB-C (PD + audio alt mode). IC Role / Device Role / Timing Role: I²S receiver and Class-D driver with wide-input voltage tolerance (4.5–21.5 V) accommodating USB-C PD negotiation. Use Value: Single-chip solution sustains 20 W LFE output even at 5 V USB-C minimum - enables true 2.1 performance in mobile form factors. |
Use Scenario: Audio subsystem for rear-seat displays with video sync and AM-band noise immunity requirements. IC Role / Device Role / Timing Role: Audio terminal synchronizing to video frame rate (576 × fS mode) while suppressing AM radio interference from vehicle electronics. Use Value: Maintains clean audio during ignition and alternator load transients - meets OEM EMC compliance thresholds without shielding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2.1-channel digital audio SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TAS5756M | TI's 2.1-channel HD audio processor with 96-kHz processing, but lacks ternary PWM and B2DRC; uses different I²C register map. | Requires external analog line-out buffer; no integrated LFE-specific EQ or bass boost resolution (0.5 dB vs. 0.125 dB). | Prefer when TI ecosystem alignment or higher THD+N tolerance (>0.03%) is acceptable. |
| MAX98927 | Maxim's mono Class-D with integrated DSP, not 2.1-channel; requires dual ICs for stereo + LFE, increasing board space and cost. | No native 2.1 configuration; lacks preset crossovers and video-sync mode - unsuitable for soundbar or A/V receiver use. | Only viable for ultra-compact mono+sub designs where channel count flexibility is secondary to footprint. |
Compared with TAS5756M and MAX98927, STA369BWS uniquely delivers single-package 2.1-channel FFX™ PWM with B2DRC, ±4 filter dynamics, and AM-suppression modes - enabling lower-system-cost, higher-integration audio terminals without sacrificing fidelity or regulatory compliance.
Availability
STA369BWS is available at Aetrix Electronics and suitable for active soundbars, compact home theater systems, and USB-C powered speakers requiring stable component supply and long-term production continuity.
Supply support for STA369BWS includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader specializing in analog, power, and microcontroller technologies for industrial, automotive, and consumer applications.
The STA369BWS belongs to ST's Sound Terminal® family - designed specifically for highly integrated, high-efficiency digital audio systems targeting space-constrained consumer and automotive infotainment products.
FAQ
What thermal management is required for STA369BWS in 2.1-channel full-power operation?
The PowerSSO-36 EPD package requires a minimum 400 mm² copper pour connected to the exposed pad via ≥6 thermal vias (0.3 mm diameter). At 18 V and 2×9 W + 1×20 W output, junction temperature remains below 115 °C with 200 LFM airflow and 4-layer PCB - verified per ST's AN4622 thermal guidelines.
Does STA369BWS support automatic sample rate detection on I²S input?
No - input sample rate must be explicitly configured via I²C register 0x00 (bit IR[1:0]) before audio playback. Supported rates (32–192 kHz) are listed in Table 11 of the datasheet; incorrect setting causes mute or distortion due to misaligned interpolation.
Can the LFE channel be used independently as a mono subwoofer driver without stereo inputs?
Yes - using channel mapping registers (0x0E–0x10), the LFE path can accept mono I²S data on DIN while disabling L/R channels. The dedicated LFE gain control (register 0x0A) and bass-boost EQ remain fully functional, enabling standalone subwoofer modules.
How does the "invalid input detect mute" feature operate in practice?
When enabled (register 0x45, bit IIDM = 1), the IC monitors LRCK/BCLK stability and mutes all outputs within 20 ms if either signal stops toggling or violates timing specs (Table 8). This prevents pop/noise during source switching or cable disconnect - confirmed in ST's EVB test reports.
STA369BWS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- Sound Terminal™
- Package/Case:
- 36-PowerBFSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Fully Integrated Processor
- Applications:
- Pre-Amplifier
- Number of Channels:
- 2
- Interface:
- I2C, I2S
- Voltage - Supply:
- 4.5V ~ 21.5V
- Operating Temperature:
- -20°C ~ 70°C (TA)
- Specifications:
- -
- Mounting Type:
- Surface Mount
- Grade:
- -
STA369BWS FAQ
1.How can I place an order for STA369BWS through Aetrix?
Please submit a Request for Quotation (RFQ) for STA369BWS on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STA369BWS reliable?
The price and inventory of STA369BWS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STA369BWS is usually 5 days.
3.What payment methods are accepted for STA369BWS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STA369BWS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STA369BWS?
STA369BWS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STA369BWS order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STA369BWS?
For technical support, including STA369BWS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STA369BWS requirements.
6.How does Aetrix verify that STA369BWS is sourced from the original manufacturer or authorized distributors?
All STA369BWS products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STA369BWS meets industry standards.
7.What is the process for return or replacement of STA369BWS?
All STA369BWS units undergo pre-shipment inspection (PSI). If there is an issue with STA369BWS, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STA369BWS part is unused and in its original packaging.
Return procedure for STA369BWS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STA369BWS Tags
-
SA571DR2G
onsemi
-
ADAU7002ACBZ-R7
Analog Devices Inc.
-
DRV135UA/2K5
Texas Instruments
-
DRV134UA/1K
Texas Instruments
-
DRV134PA
Texas Instruments
-
DRV134UA
Texas Instruments
-
DRV135UA
Texas Instruments
-
SA572DR2G
onsemi
-
PGA2311U/1K
Texas Instruments
-
SI8244BB-D-IS1R
Skyworks Solutions Inc.
-
CS8416K-CZZR
Cirrus Logic Inc.
-
SRC4392IPFBR
Texas Instruments
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
