STA323W中文资料2.1-channel high-efficiency digital audio system数据手册ST规格书

描述 Description

The STA323W is a single-chip audio system comprising digital audio processing, digital amplifier control and a DDX®power-output stage. The STA323W uses all-digital amplification to provide high-power, high-quality and high-efficiency.
The STA323W power section consists of four independent half-bridges. These can be configured, by digital control, to operate in the following modes.
Two channels, provided by two half-bridges, and a single full-bridge giving up to 2 x 10 W + 1 x 20 W of power output.
Two channels, provided by two full-bridges, giving up to 2 x 20 W of power.
A single, parallel, full-bridge channel capable of high-current operation and giving 1 x 40W output.
The STA323W also provides a full set of digital processing features. This includes up to four programmable 28-bit biquads (EQ) per channel, and bass and treble tone control. AutoModes™ enable a time-to-market advantage by substantially reducing the amount of software development needed for specific functions. These includes auto volume loudness, preset volume curves and preset EQ settings. New advanced AM radio-interference reduction modes are also provided.
The serial audio data input interface accepts all existing formats, including the I²S.
Three channels of DDX®processing are provided. This high-quality conversion from PCM audio to DDX patented 3-state PWM switching provides over 100 dB of SNR and dynamic range.

特性 Features

Wide supply voltage range (10 V - 36 V)
Three power output configurations2 x 10 W + 1 x 20 W
2 x 20 W
1 x 40 W

Thermal protection
Under-voltage protection
Short-circuit protection
PowerSO-36 slug down package
2.1 channels of 24-bit DDX®
100-dB SNR and dynamic range
32 kHz to 192 kHz input sample rates
Digital gain/attenuation +48 dB to -80 dB in 0.5-dB steps
Four 28-bit user programmable biquads (EQ) per channel
I²C control
2-channel I²S input data interface
Individual channel and master gain/attenuation
Individual channel and master soft and hard mute
Individual channel volume and EQ bypass
DDX®POP free operation
Bass/treble tone control
Dual independent programmable limiters/compressors
AutoModes™ settings for:32 preset EQ curves
15 preset crossover settings
Auto volume controlled loudness
3 preset volume curves
2 preset anti-clipping modes
Preset night-time listening mode
Preset TV AGC

Input and output channel mapping
AM noise-reduction and PWM frequency shifting modes
Soft volume update and muting
Auto zero detect and invalid input detect muting selectable DDX®ternary or binary PWM output plus variable PWM speeds
Selectable de-emphasis
Post-EQ user programmable mix with default 2.1 bass-management settings
Variable max power correction for lower full-power THD
Four output routing configurations
Selectable clock input ratio
96 kHz internal processing sample rate, 24 to 28-bit precision
Video application supports 576 * fs input mode

简介

STA323W属于集成电路（IC）的音频专用。由制造生产的STA323W音频专用音频专用的半导体器件专为音频信号的滤波、驱动、放大、转换和接口而设计。特征包括功能、应用、通道数、接口、电压和规格。应用包括音频系统、汽车音频、消费类音频、乐器、专业音频、通信系统、电信系统、数字音频、驱动器、前置放大器、信号混合、信号处理、语音触发器解决方案和 10 Base-T。