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STMicroelectronics STA32013TR
- Part No.:
- STA32013TR
- Manufacturer:
- STMicroelectronics
- Category:
- Audio Special Purpose
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
STA32013TR.pdf
- Description:
- IC FULLY INTEG PROCESSOR 28SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,373
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Product details
Overview
STA32013TR from STMicroelectronics is a 2.1-channel digital audio processor with integrated DDX™ modulation engine, designed for high-efficiency all-digital amplification systems. It delivers 24-bit processing, >100dB SNR, selectable 32–192kHz input sample rates, and supports I²S input with dual independent limiters, 4×28-bit biquad EQ per channel, and programmable bass management - deployed in compact home theater soundbars and active subwoofer modules.
For engineers reviewing the STA32013TR datasheet, STA32013TR pinout, STA32013TR application, or STA32013TR equivalent, key selection criteria include its 2.1-channel DDX output architecture, I²C-configurable auto-modes (7 crossover filters, 32 EQ presets), thermal/fault protection signaling (TWARN/FAULT/OCDETECT), and SO28 package compatibility with ST's STA50x-series power stages.
Technical Context
The STA32013TR implements a 96kHz internal processing core with 24–28-bit precision, using configurable interpolation (IR bits) to maintain consistent DDX timing across 32–192kHz input rates. Its PLL accepts XTI clock inputs scaled at 128× to 768× fs, enabling stable operation with external crystal or oscillator sources.
It integrates three independent DDX output pairs (DDX1A/B, DDX2A/B, DDX3A/B), each supporting full-power mode (OM=10) or variable drop compensation (OM=11 + CSZ[4:0]), and interfaces directly with ST's STA50x/STA51x DDX power ICs via tri-state control, EAPD, and fault feedback signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 2.1-channel (L/R/Sub) digital audio processing with independent gain, mute, and DSP bypass per channel |
| SNR / Dynamic Range | >100dB - enables high-fidelity playback without audible quantization noise in consumer audio systems |
| Input Sample Rate | 32–192kHz - supports CD, DVD-Audio, Blu-ray, and high-res streaming formats with seamless rate switching |
| Digital Gain Range | +48dB to –90dB in 0.5dB steps - allows precise loudness matching and headroom management across source types |
| I²C Address | 0x34 (SA = 0) or 0x36 (SA = 1) - enables multi-device bus configuration without address conflict in system-level designs |
| DDX Output Interface | 3× differential DDX pairs (6 pins total) - drives ST's STA50x-series Class-D power stages with full timing control and fault recovery |
| Thermal Protection | TWARN input triggers –3dB gain reduction after 400ms assertion - prevents thermal shutdown while maintaining audio continuity |
| Power Supply | VDD/VDDA = 3.0–3.6V - single-supply operation simplifies PCB layout and reduces BOM count in space-constrained enclosures |
Pinout & Package
STA32013TR is housed in a 28-pin SOIC (SO28) package with exposed pad for thermal dissipation, compliant with JEDEC MS-012AC. Pin functions are validated per STMicroelectronics preliminary datasheet Rev. 1 (Nov 2005).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SA) | I²C Address Select | Configures slave address as 0x34 (low) or 0x36 (high); pulled down internally - requires external tie-low or tie-high |
| 2–5, 21–22 (DDX1A/B, DDX2A/B, DDX3A/B) | DDX Modulation Outputs | Differential 3.3V-tolerant TTL outputs driving STA50x power stage gates; each pair supports full-power or compensated modes |
| 6 (RESET) | Global Reset | Active-low asynchronous reset; 5V-tolerant Schmitt trigger ensures robust recovery from brown-out or controller faults |
| 7–8 (SCL/SDA) | I²C Control Interface | Fast-mode (400 kbit/s) slave interface for register configuration, EQ loading, and real-time gain/volume updates |
| 10 (FILTER_PLL) | PLL Loop Filter | Analog pad requiring external RC filter (e.g., 10kΩ + 1nF) to stabilize internal PLL lock for jitter-sensitive audio paths |
| 11 (XTI) | PLL Clock Input | Accepts 8.192–49.152MHz clock; frequency must be integer multiple of input sample rate (e.g., 256×fs for 48kHz) |
| 14–16 (SDI_12, LRCKI, BICKI) | I²S Audio Input | Supports 16–24-bit left-justified, right-justified, or I²S formats; DSCKE bit enables 1-cycle clock delay for marginal masters |
| 20 (PWDN) | Power-Down Control | Hardware-controlled low-power state; asserts EAPD and disables DDX outputs while preserving register state |
| 23 (EAPD) | External Amp Power Down | Drives enable pin of companion DDX power IC; synchronized with PWDN and fault events to prevent pop/click |
| 24 (TRI-STATE) | Power Block Tri-State | Directly controls gate driver output stage; toggles during fault recovery (FDRC-regulated timing) to reset latch conditions |
| 25–27 (OCDETECT, FAULT, TWARN) | Fault Feedback Inputs | 5V-tolerant status inputs from power stage - trigger automatic –3dB gain reduction (OC/TW) or recovery sequence (FAULT) |
Key Features
| Feature | Design Value |
|---|---|
| AutoModes™ Presets | 7 factory-crossover filters + 32 EQ settings + 3 volume curves - reduce firmware development time for OEM audio tuning |
| Dynamic Range Control | Dual independent limiters/compressors per channel - maintain intelligibility in noisy environments without clipping distortion |
| Bass Management | User-programmable 2.1 mix matrix with sub-to-L/R routing - enables flexible enclosure design without external analog summing |
| Noise Suppression | AM interference switching + selectable noise-shaping topologies - suppresses switching artifacts in RF-sensitive living room deployments |
| Zero-Detect Mute | Automatic muting on silent input - eliminates DC offset and startup thumps in always-on smart speaker applications |
| Invalid Input Detection | Mutes on malformed I²S frames (e.g., missing LRCK edge) - prevents glitch-induced damage to downstream power stages |
Applications
| Soundbar Audio Processing | Active Subwoofer Controller |
|---|---|
|
Use Scenario: Compact 2.1-channel soundbar with integrated stereo drivers and wireless subwoofer link. IC Role / Device Role / Timing Role: Primary digital audio processor handling I²S input decoding, 32-band parametric EQ, bass redirection, and DDX modulation for left/right channels. Use Value: Eliminates need for external DSP and analog summing; 2.1 routing and sub-level calibration performed digitally with <10µs inter-channel latency. |
Use Scenario: Powered subwoofer with adaptive thermal management and room-response correction. IC Role / Device Role / Timing Role: Sub-channel processor executing 4-biquad EQ, dynamic compression, and DDX modulation with TWARN-triggered gain rollback. Use Value: Prevents voice-coil overheating during sustained low-frequency playback while preserving transient impact via soft-volume update. |
| Smart TV Audio Hub | Multi-Source AV Receiver Module |
|
Use Scenario: Slim-profile TV with HDMI ARC, optical TOSLINK, and Bluetooth audio inputs. IC Role / Device Role / Timing Role: Central audio switcher and format converter - maps variable-rate inputs to fixed 96kHz DDX pipeline with de-emphasis and channel remapping. Use Value: Supports simultaneous source switching without resync delay; Night Mode and TV AGC presets comply with broadcast loudness standards (EBU R128). |
Use Scenario: Entry-level AV receiver supporting stereo analog/digital inputs and zone 2 preamp output. IC Role / Device Role / Timing Role: Main channel processor implementing 7-band graphic EQ, loudness compensation, and anti-clipping limiting before DDX output. Use Value: Enables cost-effective discrete-channel amplification using STA50x power stages while retaining studio-grade dynamic range control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2.1-channel digital audio processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STA330BTR | Successor with enhanced 192kHz support, lower THD (<0.003%), and integrated 32kHz crystal oscillator (XTAL_IN/OUT) | Eliminates external crystal and PLL filter components; targets next-gen streaming devices requiring tighter jitter specs | Select when upgrading legacy designs for higher resolution audio and reduced BOM count - not pin-compatible due to added XTAL pins |
| TAS5508PAG | TI 8-channel audio processor with 108dB SNR, but no native DDX output - requires external modulator or PWM interface | Used in multi-zone systems where DDX is not required; supports S/PDIF and TDM alongside I²S | Choose for scalable multi-room audio platforms needing >2.1 channels - requires redesign of output stage and fault signaling logic |
Compared with STA32013TR, STA330BTR offers improved integration and performance for new designs, while TAS5508PAG provides greater channel count and interface flexibility at the cost of DDX-native control and thermal co-design with ST power stages.
Availability
STA32013TR is available at Aetrix Electronics and suitable for soundbar manufacturing, active subwoofer production, and smart TV audio subsystems requiring stable component supply and long-lifecycle support.
Supply support for STA32013TR 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 analog, power, and microcontroller solutions for automotive, industrial, and consumer markets.
The STA320 product line was developed to enable fully digital, high-efficiency audio amplification systems by tightly coupling digital signal processing with ST's proprietary DDX modulation technology and power stage ICs.
FAQ
What is the function of the FILTER_PLL pin?
The FILTER_PLL pin connects to an external RC loop filter (typically 10kΩ + 1nF) that stabilizes the internal PLL's phase error response. This analog pad must be routed away from digital noise sources and grounded via short, low-inductance traces to ensure low-jitter 96kHz processing clock generation - critical for maintaining >100dB SNR performance.
How does the TWARN input affect audio output?
When TWARN is asserted low for ≥400ms, the STA32013TR automatically applies a –3dB gain reduction to all channels to reduce thermal load. The attenuation remains active until device reset or TWARN deasserts and TWRB=0 is set - ensuring continuous audio without hard mute, unlike FAULT-triggered tri-state action.
Can STA32013TR operate without an external crystal?
Yes - it requires only an external clock source on XTI (e.g., oscillator module or MCU-generated clock), not a crystal. The XTI input accepts 8.192–49.152MHz signals; no internal oscillator or crystal load capacitors are needed. Crystal-based designs require separate oscillator circuitry per PLL stability requirements.
What happens during a FAULT assertion?
Upon FAULT pin assertion (low), the STA32013TR initiates a recovery sequence: it drives TRI-STATE low for a duration defined by FDRC registers (0.1ms–1s), then toggles it high. This cycle repeats as long as FAULT remains active, allowing the companion DDX power stage to clear latch conditions without requiring system-level reset.
STA32013TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Fully Integrated Processor
- Applications:
- Pre-Amplifier
- Number of Channels:
- 3
- Interface:
- I2C, I2S
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -20°C ~ 125°C (TJ)
- Specifications:
- Direct Digital Amplification
- Mounting Type:
- Surface Mount
- Grade:
- -
STA32013TR FAQ
1.How can I place an order for STA32013TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STA32013TR 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 STA32013TR reliable?
The price and inventory of STA32013TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STA32013TR is usually 5 days.
3.What payment methods are accepted for STA32013TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STA32013TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STA32013TR?
STA32013TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STA32013TR 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 STA32013TR?
For technical support, including STA32013TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STA32013TR requirements.
6.How does Aetrix verify that STA32013TR is sourced from the original manufacturer or authorized distributors?
All STA32013TR 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 STA32013TR meets industry standards.
7.What is the process for return or replacement of STA32013TR?
All STA32013TR units undergo pre-shipment inspection (PSI). If there is an issue with STA32013TR, 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 STA32013TR part is unused and in its original packaging.
Return procedure for STA32013TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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