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  • The STA350Bx is an integrated solution of digital audio processing, digital amplifier control, and FFX-power output stage, thereby creating a high-power single-chip FFX™ solution comprising high-quality, high-efficiency, and all-digital amplification.

    The STA350Bx is based on an FFX (fully flexible amplification) processor, a proprietary technology from STMicroelectronics. FFX is the evolution and the enlargement of ST’s ternary technology: the new processor can be configured to work in ternary, binary, binary differential and phase-shift PWM modulation schemes.
    The STA350Bx contains the ternary, binary and binary differential implementations, a subset of the full capability of the FFX processor.
    The STA350Bx is part of the Sound Terminal® family that provides full digital audio streaming to the speaker, offering cost effectiveness, low power dissipation and sound enrichment.
    The STA350Bx power section consists of four independent half-bridges. These can be configured via digital control to operate in different modes. 2.1 channels can be provided by two half-bridges and a single full-bridge, providing up to 2 x 18 W + 1 x 40 W of music output power, by using standard 4 and 8 Ω speakers. Two channels can be provided by two full-bridges, providing up to 2 x 50 W of music power, by using standard 6 Ω speaker or 2 x 40 W by using 8 Ω speakers at 25 V. The IC can also be configured as 2.1 channels with 2 x 40 W provided by the device and external power for FFX power drive. If configured as mono-BTL, the latter is capable of providing up to 1 x 90 W on a standard 3 Ω load or 1 x 75 W by using a 4 Ω, setting the supply voltage at 25 V. Please refer to the package thermal characteristics and application suggestions for more details.
    Also provided in the STA350Bx are a full assortment of digital processing features. This includes up to 8 programmable biquads (EQ) per channel. Special digital signal processing techniques are available in order to manage low-frequency quantization noise in case of very low frequency cutoff filter thresholds. The coefficient range -4..4 allows the easy implementation of high shelf filters. Available presets allow the advantage of earlier time-to-market by substantially reducing the amount of software development needed for certain functions. This includes 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 speaker linear frequency response regardless of output power level. This feature independently processes the two bands, controlling dynamically the output power level in each band and so providing better sound clarity.
    The serial audio data input interface accepts all possible formats, including the popular I2S format. Three channels of FFX processing are provided. This high-quality conversion from PCM audio to FFX PWM switching waveform provides over 100 dB SNR and dynamic range.

    主な特徴

    • Wide-range supply voltage
      • 5 V to 26 V (operating range)
      • 30 V (absolute maximum rating)
    • Four power output configurations
      • 2 channels of ternary PWM (stereo mode) (2 x 50 W into 6 Ω at 25 V)
      • 3 channels - left, right using binary and LFE using ternary PWM (2.1 mode) (2 x 18 W + 1 x 40 W into 2 x 4 Ω, 1 x 8 Ω at 25 V)
      • 2 channels of ternary PWM (2 x 50 W) + stereo lineout ternary
      • 1 channel of ternary PWM as mono-BTL (1 x 90 W into 3 Ω at 24.5 V)
    • FFX™ 100 dB SNR and dynamic range
    • Selectable 32 to 192 kHz input sample rates
    • I2C control with selectable device address
    • Digital gain/attenuation +42 dB to -80 dB with 0.125 dB/step resolution
    • Soft-volume update with programmable ratio
    • Individual channel and master gain/attenuation
    • Two independent DRCs configurable as a dual-band anti-clipper (B2DRC) or independent limiters/compressors
    • EQ-DRC for DRC based on filtered signals
    • Dedicated LFE processing for bass boosting with 0.125 dB/step resolution
    • Audio presets:
      • 15 preset crossover filters
      • 5 preset anti-clipping modes
      • Preset nighttime listening mode
    • Individual channel and master soft/hard mute
    • Independent channel volume and DSP bypass
    • Automatic zero-detect mute
    • Automatic invalid input-detect mute
    • I2S input data interface
    • Input and output channel mapping
    • Up to 8 user-programmable biquads per channel
    • 3 coefficient banks for EQ presets storing with fast recall via I2C interface
    • Extended coefficient dynamic up to -4..4 for easy implementation of high shelf filters
    • 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 with quantization error noise shaping for very low cutoff frequency filters
    • Thermal overload and short-circuit protection embedded
    • Video apps: 576 x Fs input mode supported
    • Fully compatible with the STA339BW and the STA339BWS

サンプル & 購入

製品型番
製品ステータス
数量
概算価格(USS)
パッケージ
梱包タイプ
温度(℃) ECCN (US)
詳細
販売代理店からオーダー
STからオーダー
最小値
max
STA350BW
Active
- - PowerSSO 36 Tube -20 85 EAR99
詳細情報

Country of Origin:

-

No availability of distributors reported, please contact our sales office
STA350BWTR
Active
1000 2.556 PowerSSO 36 Tape And Reel -20 85 EAR99
詳細情報

Country of Origin:

MALAYSIA

在庫チェック

Distributor availability ofSTA350BWTR

代理店名
地域 在庫 最小発注 Third party link
DIGIKEY WORLDWIDE 41 1 Order Now

代理店レポートによる在庫データ: 2019-08-08

代理店名

DIGIKEY

在庫

41

Min.Order

1

地域

WORLDWIDE Order Now

代理店レポートによる在庫データ: 2019-08-08

STA350BW

製品ステータス

アクティブ

数量

-

Unit Price (US$)

*

Unit Price (US$)

-

パッケージ

PowerSSO 36

梱包タイプ

Tube

Operating Temperature (°C)

(最小値)

-20

(max)

85

ECCN (US)

EAR99

Country of Origin

-

STA350BWTR

製品ステータス

アクティブ

数量

1000

Unit Price (US$)

2.556*

Distributor availability ofSTA350BWTR

代理店名
地域 在庫 最小発注 Third party link
DIGIKEY WORLDWIDE 41 1 Order Now

代理店レポートによる在庫データ: 2019-08-08

代理店名

DIGIKEY

在庫

41

Min.Order

1

地域

WORLDWIDE Order Now

代理店レポートによる在庫データ: 2019-08-08

Unit Price (US$)

2.556

パッケージ

PowerSSO 36

梱包タイプ

Tape And Reel

Operating Temperature (°C)

(最小値)

-20

(max)

85

ECCN (US)

EAR99

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

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技術文書

    • Description バージョン サイズ アクション
      DS7146
      2.1-channel high-efficiency digital audio system Sound Terminal®
      7.0
      2.28 MB
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      2.1-channel high-efficiency digital audio system Sound Terminal®

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      AN4118
      APWLink USB interface board for Sound Terminal® demonstration boards
      2.0
      1 MB
      PDF
      AN3984
      IIR filter design equations for Sound Terminal® devices
      1.1
      493.63 KB
      PDF
      AN3340
      Loudspeaker characterization and compensation
      1.3
      3.85 MB
      PDF
      AN3383
      STA350BW 2.0-channel demonstration board
      1.1
      5.47 MB
      PDF
      AN4569
      Using Sound Terminal® STA3xyBWz devices in 2.1 channel applications
      1.0
      2.28 MB
      PDF
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      APWLink USB interface board for Sound Terminal® demonstration boards

      AN3984

      IIR filter design equations for Sound Terminal® devices

      AN3340

      Loudspeaker characterization and compensation

      AN3383

      STA350BW 2.0-channel demonstration board

      AN4569

      Using Sound Terminal® STA3xyBWz devices in 2.1 channel applications

    • Description バージョン サイズ アクション
      UM1545
      Using the Audio Processor Workbench (APWorkbench)
      1.0
      3.15 MB
      PDF
      UM1545

      Using the Audio Processor Workbench (APWorkbench)

    • Description バージョン サイズ アクション
      AN4118
      APWLink USB interface board for Sound Terminal® demonstration boards
      2.0
      1 MB
      PDF
      AN4118

      APWLink USB interface board for Sound Terminal® demonstration boards

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製品型番 製品ステータス パッケージ グレード RoHSコンプライアンスグレード 材料宣誓書**
STA350BW
Active
PowerSSO 36 インダストリアル Ecopack2
STA350BWTR
Active
PowerSSO 36 インダストリアル Ecopack2

STA350BW

Package:

PowerSSO 36

Material Declaration**:

Marketing Status

Active

Package

PowerSSO 36

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STA350BWTR

Package:

PowerSSO 36

Material Declaration**:

PDF XML

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.