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STA339BWS 데이터시트(PDF) 8 Page - STMicroelectronics

부품명 STA339BWS
상세설명  2.1-channel 40-watt high-efficiency digital audio system Sound Terminal짰
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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STA339BWS 데이터시트(HTML) 8 Page - STMicroelectronics

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Description
STA339BWS
8/76
Doc ID 15276 Rev 5
1
Description
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.
Figure 1.
Block diagram
Protection
current/thermal
Logic
Regulators
Bias
Power
control
FFX
PLL
Volume
control
Channel
1A
Channel
1B
Channel
2A
Channel
2B
I2S
interface
Power
Digital DSP
I2C


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