STA333BW

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2.1-channel high-efficiency digital audio system

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  • The STA333BW is an integrated solution of digital audio processing, digital amplifier controls and power output stages 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 STA333BW 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.
    The power section consists of four independent half-bridges. These can be configured via digital control to operate in different modes.
    For example, 2.1 channels can be provided by two half-bridges and a single full-bridge, supplying up to 2 x 9 W + 1 x 20 W of output power or two channels can be provided by two full-bridges, supplying up to 2 x 20 W of output power.
    The IC can also be configured as 2.1 channels with 2 x 20 W supplied by the device plus a drive for an external FFX power amplifier, such as STA533WF or STA515W.
    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.
    Also provided in the STA333BW are a full assortment of digital processing features. This includes up to 5 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. The DRC dynamically equalizes the system to provide a linear frequency speaker response regardless of output power level.

    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
    • Dynamic range compression (DRC) or anticlipping mode
    • Audio presets:
      • 15 preset crossover filters
      • 5 preset anticlipping modes
      • Preset night-time 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 5 user-programmable biquads/channel
    • Three coefficients banks for EQ presets storing 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
    • Sub channel mix into left and right channels
    • 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 STA335BW, STA339BW, STA339BWS, STA559BW and STA559BWS

Circuit Diagram

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STA333BW13TR
Active
PowerSSO 36 Industrial Ecopack2

STA333BW13TR

Package:

PowerSSO 36

Material Declaration**:

Marketing Status

Active

Package

PowerSSO 36

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) 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.

Sample & Buy

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ECCN (US)
ECCN (EU)
Packing Type
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Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
STA333BW13TR Available at 1 distributors

Distributor availability ofSTA333BW13TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 960 1 Order Now

Distributor reported inventory date: 2021-01-19

Distributor Name

DIGIKEY

Stock

960

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-01-19

Buy Direct
Active
EAR99 NEC Tape And Reel PowerSSO 36 - - MALAYSIA 0.8319 / 1k

STA333BW13TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.8319 / 1k

Distributor availability ofSTA333BW13TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 960 1 Order Now

Distributor reported inventory date: 2021-01-19

Distributor Name

DIGIKEY

Stock

960

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2021-01-19

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

PowerSSO 36

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.8319 / 1k

Country of Origin

MALAYSIA

(*) 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