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STA339BWS

2.1 channel high efficiency digital audio system
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The STA339BWS is an integrated solution of digital audio processing, digital amplifier controls and power output stage to create a high-power single-chip FFX digital amplifier with high quality and high efficiency. Three channels of FFX processing are provided. The FFX processor implements the ternary, binary and binary differential processing capabilities of the full FFX processor.

The STA339BWS is part of the Sound Terminal®family that provides full digital audio streaming to the speakers and offers cost effectiveness, low power dissipation and sound enrichment.

Also provided in the STA339BWS are a full assortment of digital processing features. This includes up to 8 programmable biquads (EQ) per channel. Available presets enable a time-to-market advantage by substantially reducing the amount of software development needed for functions such as audio preset volume loudness, preset volume curves and preset EQ settings. There are also new advanced AM radio interference reduction modes. Dual-band DRC dynamically equalizes the system to provide linear frequency speaker response regardless of output power level. This feature separates the audio frequency band into two sub-bands independently processed to provide better sound clarity and to avoid speaker saturation.

The serial audio data input interface accepts all possible formats, including the popular I2S format. The high-quality conversion from PCM audio to FFX PWM switching provides over 100 dB of SNR and of dynamic range.

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Errata Sheet
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Datasheet

Key Features

  • Wide-range supply voltage, 4.5 V to 21.5 V
  • Three power output configurations:
  • 2 channels of ternary PWM (2 x 20 W into 8 Ω at 18 V) + PWM output
  • 2 channels of ternary PWM (2 x 20 W into 8 Ω at 18 V) + ternary stereo line-out
  • 2.1 channels of binary PWM (left, right, LFE) (2 x 9 W into 4 Ω +1 x 20 W into 8 Ω at 18 V)
  • FFX with 100-dB SNR and dynamic range
  • Scalable FFX modulation index
  • Selectable 32- to 192-kHz input sample rates
  • I2C control with selectable device address
  • Digital gain/attenuation +48 dB to -80 dB with 0.5-dB/step resolution
  • Soft volume update with programmable ratio
  • Individual channel and master gain/attenuation
  • Two independent DRCs configurable as a dual-band anticlipper (B2DRC) or as independent limiters/compressors
  • EQ-DRC for DRC based on filtered signals
  • Dedicated LFE processing for bass boosting
  • Audio presets:
  • 15 preset crossover filters
  • 5 preset anticlipping modes
  • Preset nighttime listening mode
  • Individual channel soft/hard mute
  • Independent channel volume and DSP bypass
  • I2S input data interface
  • Input and output channel mapping
  • Automatic invalid input-detect mute
  • Up to 8 user-programmable biquads/channel
  • Three coefficient banks for storing EQ presets with fast recall via I2C interface
  • Bass/treble tones and de-emphasis control
  • Selectable high-pass filter for DC blocking
  • Advanced AM interference frequency switching and noise suppression modes
  • Selectable high- or low-bandwidth noise-shaping topologies
  • Selectable clock input ratio
  • 96-kHz internal processing sample rate
  • Thermal overload and short-circuit protection technology
  • Video apps: 576 x fSinput mode supported
  • Pin and SW compatible with STA333BW, STA339BW, STA559BW and STA559BWS

Circuit Diagram

Design Resources

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Technical Documentation

Product Specifications

Description Version Size
pdf
DS6016: 2.1-channel 40-watt high-efficiency digital audio system Sound Terminal®
8.0 1,351 KB

Application Notes

Description Version Size
pdf
AN3340: Loudspeaker characterization and compensation
1.3 3,944 KB
pdf
AN3984: IIR filter design equations for Sound Terminal® devices
1.1 494 KB
pdf
AN4118: APWLink USB interface board for Sound Terminal® demonstration boards
2.0 1,029 KB
pdf
AN4569: Using Sound Terminal® STA3xyBWz devices in 2.1 channel applications
1.0 2,336 KB

User Manual

Description Version Size
pdf
UM1545: Using the Audio Processor Workbench (APWorkbench)
1.0 3,221 KB

Presentations & Training Material

Training Material

Description Version Size
pdf
Learn the basics about STSpeakerSafe technology
1.0 197 KB

Related Tools and Software

Related Tools and Software

Part Number Description
APWorkbench Audio Processor Workbench software development suite
STEVAL-CCA035V1 APWLink USB interface board based on the STA120D

Publications and Collaterals

Flyer

Description Version Size
pdf
APWorkbench software for audio ICs and MEMS microphones
2,349 KB
pdf
Sound Terminal for TV and speakers
156 KB

Brochure

Description Version Size
pdf
Analog audio solution
1,371 KB
pdf
FFX Full flexible amplification
4,307 KB

Sample & Buy

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Part Number Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STA339BWS13TRActivePowerSSO 36Tape And Reel-20150_-2.414Distributor reported inventory date: 2014-11-28
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA10000
Farnell Element14Order NowEUROPE8311
MOUSEROrder NowWORLDWIDE921
Ecopack2PDF
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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