STA559BW Digital Audio ICs, Sound Terminals

The STA559BW 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 STA559BW 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 1.4 W + 1 x 6 W of output power or two channels can be provided by two full-bridges, supplying up to 2 x 3 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.

Also provided in the STA559BW are a full assortment of digital processing features. This includes up to four 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.

技术特性

Wide-range supply voltage, 4.5 V to 16 V
Three power output configurations:
- 2 channels of ternary PWM (2 x 3 W into 4 Ω at 5 V) + PWM output
- 2 channels of ternary PWM (2 x 3 W into 4 Ω at 5 V) + ternary stereo line-out
- 2.1 channels of binary PWM (left, right, LFE) (2 x 0.7 W + 1 x 3 W into 4 Ω at 5 V) (2 x 1.4 W + 1 x 6 W into 2 Ω at 5 V)
FFX with 100-dB SNR and dynamic range
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
Individual channel and master gain/attenuation
Two independent limiters/compressors
Dynamic range compression or anti-clipping modes
Audio presets:
- 15 preset crossover filters
- 5 preset anti-clipping modes
- Preset night-time listening mode
Individual channel soft/hard mute
Independent channel volume and DSP bypass
2-channel I2S input data interface
Input and output channel mapping
Automatic invalid-input detect Mute
Automatic zero-detect mute
Up to 4 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
Selectable high- or low-bandwidth noise-shaping topologies
Selectable clock input ratio
Thermal overload and short-circuit protection embedded
Video apps: 576 x fSinput mode supported

功能框图

STA559BW 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
STA559BWSTR	Active	1.3	1000	PowerSSO 36	Tape And Reel		STA559BWSTR
STA559BW13TR	Active	1.2	1000	PowerSSO 36	Tape And Reel		STA559BW13TR
STA559BW	Active	1.2	1000	PowerSSO 36	Tube		STA559BW
STA559BWS	Active	1.3	1000	PowerSSO 36	Tube		STA559BWS

DATASHEET

下载	描述	版本	大小
STA559BW	5-volt, 2-amp, 2.1-channel high-efficiency digital audio system Sound Terminal®	1	2905KB

APPLICATION NOTES

下载	描述	版本	大小
AN2479	AN2479: STA559BW demo board application note	1	2911KB
AN3340	AN3340: Loudspeaker characterization and compensation	1	3944KB
AN3984	AN3984: IIR filter design equations for Sound Terminal® devices	1	494KB