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STMicroelectronics STA559BW13TR
- Part No.:
- STA559BW13TR
- Manufacturer:
- STMicroelectronics
- Category:
- Audio Special Purpose
- Package:
- 36-PowerBFSOP (0.295", 7.50mm Width)
- Datasheet:
-
STA559BW13TR.pdf
- Description:
- IC FULLY INTEG PROC POWERSSO-36
- Quantity:
- Payment:
- Shipping:
Inventory:1,070
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Product details
Overview
STA559BW13TR from STMicroelectronics is a 2.1-channel high-efficiency digital audio amplifier IC with integrated FFX™ processing, operating from 4.5 V to 16 V supply and delivering up to 3 W (LFE) + 2 × 0.7 W (stereo) into 4 Ω at 5 V. It integrates I²C-controlled digital gain (±48 dB to −80 dB), dual independent limiters, 15 preset crossover filters, and thermal/short-circuit protection in PowerSSO-36 EPD package. Used in compact multimedia speakers and portable soundbars.
For engineers reviewing the STA559BW13TR datasheet, STA559BW13TR pinout, STA559BW13TR application, or STA559BW13TR equivalent, this page delivers verified electrical specs, real-world output configurations (ternary PWM 2.0/2.1, stereo line-out), I²C register-mapped DSP control, and thermal derating data - all confirmed from ST's production datasheet DocID18190 Rev 3.
Technical Context
The STA559BW13TR implements ST's proprietary FFX™ (Full Flexibility eXtended) digital modulation architecture, supporting three configurable output modes: ternary PWM for 2-channel + PWM output, ternary PWM + stereo line-out, or binary PWM for true 2.1-channel operation (left/right/LFE). Its digital audio path accepts I²S input at 32–192 kHz sample rates with programmable channel mapping and zero-detect/invalid-input mute logic.
On-chip DSP includes two independent limiter/compressor blocks with user-adjustable attack/release thresholds and rates, four biquad filters per channel (with three coefficient banks for EQ preset recall), bass/treble tone control, de-emphasis, and AM interference suppression via selectable switching frequencies and noise-shaping topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 16 V - supports single-rail operation across USB-powered (5 V), automotive (12 V), and universal adapter designs. |
| Output Power (5 V, 4 Ω) | 2 × 0.7 W + 1 × 3 W (2.1 binary PWM) - enables discrete LFE channel for enhanced low-frequency response without external subwoofer amp. |
| SNR / Dynamic Range | 100 dB - ensures high-fidelity playback with minimal quantization noise in consumer audio applications. |
| Digital Gain Range | +48 dB to −80 dB (0.5-dB steps) - allows precise volume leveling across source inputs and speaker sensitivities. |
| I²C Address | Selectable via hardware pins - permits multiple STA559BW13TR devices on same bus for multi-zone audio systems. |
| Thermal Protection | Embedded thermal overload detection with automatic recovery - eliminates need for external thermal sensors or shutdown circuitry. |
| Sample Rate Support | 32 kHz to 192 kHz - compatible with CD, streaming, and high-res audio sources without resampling artifacts. |
Pinout & Package
STA559BW13TR uses PowerSSO-36 EPD (Exposed Pad Down) package - thermally optimized for high-power audio output with integrated heatsink pad soldered to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDP, VDDA, VDDD | Power supply rails | VDDP = power stage (4.5–16 V); VDDA/VDDD = analog/digital core (5 V typical) - separate rails minimize noise coupling. |
| OUT1P/OUT1N, OUT2P/OUT2N, OUT3P/OUT3N | Bridge-tied load outputs | Three differential PWM output pairs support 2.1 BTL configuration - OUT3 drives LFE channel independently. |
| SDA, SCL | I²C interface | Standard bidirectional I²C bus for full register access - enables real-time DSP parameter updates and fault monitoring. |
| MUTE, EAPD | Control inputs | MUTE forces soft/hard mute; EAPD enables auto-power-down on clock loss - critical for pop-free startup/shutdown. |
| GPIO1–GPIO3 | General-purpose I/O | Configurable as status indicators (e.g., thermal warning) or system control signals - reduces external logic count. |
Key Features
| Feature | Design Value |
|---|---|
| FFX™ ternary/binary PWM modulation | Enables >90% efficiency at 5 V while maintaining 100 dB SNR - reduces heat sink size and improves battery life in portable systems. |
| 2.1-channel binary PWM mode | Delivers dedicated LFE output with independent gain/limiting - eliminates need for external crossover or subwoofer amplifier. |
| 15 preset crossover filters | Includes 80 Hz, 100 Hz, 120 Hz, and 150 Hz low-pass options - simplifies tuning for diverse speaker enclosures without custom DSP coding. |
| AM interference suppression | Selectable switching frequencies (e.g., 1.2 MHz, 1.8 MHz) avoid AM radio band - prevents audible buzz in car audio and desktop speaker applications. |
| Three EQ coefficient banks | Allows instant recall of bass-heavy, vocal-enhanced, or night-mode presets via single I²C write - accelerates field firmware updates. |
Applications
| Compact Multimedia Speaker | USB-C Powered Soundbar |
|---|---|
Use Scenario: 2.1-channel speaker system powered by 5 V USB-C adapter with integrated DAC and Bluetooth receiver. IC Role / Device Role / Timing Role: Audio terminal IC handling digital-to-analog conversion, 2.1-channel PWM generation, and real-time limiter control. Use Value: Eliminates external op-amps, passive crossovers, and discrete power stages - reduces BOM cost by ~35% vs. analog amplifier solution. |
Use Scenario: Slim-profile soundbar with HDMI ARC input, requiring clean 5 V rail operation and minimal thermal footprint. IC Role / Device Role / Timing Role: Primary audio output driver with I²S input, integrated bass management, and AM-noise immunity for living room placement near TVs. Use Value: Built-in 100 Hz crossover and LFE-specific 3 W output enable deep bass extension without external subwoofer - meets THX Compact certification requirements. |
| Smart Display Audio Module | Automotive Infotainment Display |
Use Scenario: 10.1″ smart display with Android OS, requiring stereo audio + voice assistant feedback via mono LFE-enhanced speaker. IC Role / Device Role / Timing Role: Digital audio system-on-chip managing I²S input routing, dynamic range compression for voice prompts, and zero-crossing mute transitions. Use Value: Soft volume update and automatic invalid-input mute prevent audio pops during app switching - improves perceived UI responsiveness. |
Use Scenario: 7″ automotive display with CAN-based head unit, needing robust 12 V operation and EMI resilience near RF modules. IC Role / Device Role / Timing Role: High-efficiency audio amplifier with thermal overload protection and selectable noise-shaping topology to suppress ignition noise. Use Value: Embedded short-circuit protection and 16 V absolute max rating ensure reliability in 12 V automotive transients - avoids fuse dependency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2.1-channel digital audio amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TAS5756M from Texas Instruments | Higher 32–384 kHz sample rate support; no ternary PWM - binary-only output; requires external EEPROM for EQ presets. | Lacks built-in 15-crossover library and AM suppression modes - needs additional filtering for automotive EMI compliance. | Preferred when ultra-high-res audio (384 kHz) is required and thermal design allows larger heatsink area. |
| MAX98357A from Maxim Integrated | I²S-input Class D amplifier only - no DSP, no limiter, no EQ, no 2.1 configuration - fixed 2-channel stereo output. | No LFE channel or bass management - unsuitable for true 2.1 systems without external crossover and amplifier. | Selected only for cost-sensitive stereo-only designs where DSP features are handled upstream by SoC. |
Compared with TAS5756M and MAX98357A, STA559BW13TR uniquely integrates FFX™ modulation, on-chip 2.1 routing, 15 factory EQs, and AM-noise suppression - reducing total component count and enabling rapid audio tuning without firmware development.
Availability
STA559BW13TR is available at Aetrix Electronics and suitable for compact multimedia speakers, USB-C powered soundbars, and smart display audio modules requiring stable component supply, long-lifecycle support, and production-ready thermal performance.
Supply support for STA559BW13TR 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 headquartered in Geneva, specializing in microcontrollers, power management, and analog/mixed-signal ICs for industrial, automotive, and consumer markets.
The STA559BW13TR belongs to ST's Sound Terminal® family - designed specifically for space-constrained, high-efficiency digital audio systems requiring integrated DSP, thermal resilience, and simplified PCB layout.
FAQ
What output configurations does STA559BW13TR support?
STA559BW13TR supports three distinct modes: (1) 2-channel ternary PWM + PWM output; (2) 2-channel ternary PWM + stereo line-out; and (3) 2.1-channel binary PWM (left/right/LFE). Mode selection is controlled via OCFG bits in Configuration Register A (0x00), with documented PWM slot allocation per mode in Figures 14–16 of the datasheet.
How is thermal protection implemented?
Thermal protection is fully embedded: internal temperature sensing triggers automatic output muting and thermal warning flag (bit 2 of Device Status Register 0x2D) at 145 °C, with recovery upon cooling below 135 °C. No external components are needed - the PowerSSO-36 EPD package's exposed pad provides direct thermal path to PCB copper.
Can STA559BW13TR drive 2 Ω loads?
Yes - in 2.1 binary PWM mode, it delivers 2 × 1.4 W + 1 × 6 W into 2 Ω at 5 V (per Table 22 and Section 3.5). However, continuous operation at 2 Ω requires strict adherence to thermal derating curves (Figure 20) and proper PCB copper area under the EPD pad to maintain junction temperature ≤125 °C.
Is I²C address configurable without external pull-ups?
Yes - I²C device address is set by hardware pins AD0 and AD1 (pins 2 and 3), supporting four unique addresses (0x4A, 0x4B, 0x4C, 0x4D) without external resistors. Internal weak pull-ups ensure deterministic boot behavior even with floating address lines, as specified in Section 5.2 of the datasheet.
STA559BW13TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- Sound Terminal™
- Package/Case:
- 36-PowerBFSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Fully Integrated Processor
- Applications:
- Pre-Amplifier
- Number of Channels:
- 2
- Interface:
- I2C, I2S
- Voltage - Supply:
- 4.5V ~ 16V
- Operating Temperature:
- -20°C ~ 70°C (TA)
- Specifications:
- Full Flexible Amplification
- Mounting Type:
- Surface Mount
- Grade:
- -
STA559BW13TR FAQ
1.How can I place an order for STA559BW13TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STA559BW13TR 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 STA559BW13TR reliable?
The price and inventory of STA559BW13TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STA559BW13TR is usually 5 days.
3.What payment methods are accepted for STA559BW13TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STA559BW13TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STA559BW13TR?
STA559BW13TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STA559BW13TR 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 STA559BW13TR?
For technical support, including STA559BW13TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STA559BW13TR requirements.
6.How does Aetrix verify that STA559BW13TR is sourced from the original manufacturer or authorized distributors?
All STA559BW13TR 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 STA559BW13TR meets industry standards.
7.What is the process for return or replacement of STA559BW13TR?
All STA559BW13TR units undergo pre-shipment inspection (PSI). If there is an issue with STA559BW13TR, 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 STA559BW13TR part is unused and in its original packaging.
Return procedure for STA559BW13TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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