产品概述
描述
The STA335BWQS is an integration of digital audio processing, digital amplifier control, DDX®power-output stage and QSound QHD®technology to create a high-power single-chip DDX solution comprising high-quality, high-efficiency and all digital amplification.
The STA335BWQS is part of the Sound Terminal™family that provides full digital audio streaming to the speaker offering cost effectiveness, low energy dissipation and sound enrichment.
The STA335BWQS 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 9 W + 1 x 20 W of power output. Two channels can be provided by two full-bridges, providing up to 2 x 37 W of power. The IC can also be configured as 2.1 channels with 2 x 30 W provided by the device and external power for DDX®power drive.
Also provided in the STA335BWQS are a full assortment of digital processing features. This includes up to four programmable 28-bit biquads (EQ) per channel, and bass/treble tone control. AutoModes™ enables a time-to-market advantage by substantially reducing the amount of software development needed for certain functions. This includes auto volume loudness, preset volume curves and preset EQ settings. There are also new advanced AM radio-interference reduction modes. The serial audio data input interface accepts all possible formats, including the popular I2S format. Three channels of DDX®processing are provided. This high-quality conversion from PCM audio to the DDX-patented 3-state PWM switching waveform provides over 100 dB SNR and dynamic range.
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所有功能
- Wide supply voltage range (4.5 V to 24 V)
- 3 power output configurations
- 2 channels of ternary PWM (stereo mode) (2 x 20 W into 8 Ω at 18 V), (2 x 37 W into 8 Ω at 24 V)
- 3 channels - left, right using binary and LFE using ternary PWM (2.1 mode) (2 x 9 W + 1 x 20 W into 2 x 4 Ω, 1 x 8 Ω at 18 V)
- 2 channels of ternary PWM (2 x 20 W) + stereo line-out ternary
- 2.1 channels of 24-bit DDX®
- 100-dB SNR and dynamic range
- Selectable 32 kHz to 192 kHz input sample rates
- I2C control with selectable device address
- Digital gain/attenuation +48 dB to -80 dB in 0.5-dB steps
- Soft volume update
- Individual channel and master gain/attenuation
- Dual independent limiters/compressors
- Dynamic range compression or anti-clipping modes
- AutoModes™ settings for:
- 15 preset crossover filters
- 2 preset anti-clipping modes
- Preset night-time listening mode
- Individual channel and master soft and hard mute
- Independent channel volume and DSP bypass
- Automatic zero-detect mute
- Automatic invalid input detect mute
- 2-channel I2S input data interface
- Input and output channel mapping
- 4 x 28-bit user programmable biquads (EQ) per channel
- Bass/treble tone control
- DC blocking selectable high-pass filter
- Selectable de-emphasis
- Sub-channel mix into left and right channels
- Advanced AM interference frequency switching and noise-suppression modes
- Selectable high or low-bandwidth noise-shaping topologies
- Variable max power correction for lower full-power THD
- Selectable clock input ratio
- 96 kHz internal processing sample rate, 24 to 28-bit precision
- Thermal overload and short-circuit protection
- Video application supports 576 x fsinput mode
- QSound QHD®
- Field proven stereo soundfield enhancement technology
- Provides improved audio image width, separation and depth for stereo signals
- Synthesizes a 3-D stereo soundfield
- PowerSSO-36 slug down package.
EDA符号、封装和3D模型
意法半导体 - STA335BWQS
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