產品概述

STA326單片音頻系統集成了數字音頻處理器、數字放大控制器和一個DDX數字功率輸出級。通過數字控制可以將其配置成不同的輸出模式，提供各種音頻處理和均衡選項，包括每通道4個可編程28位二階濾波器，以及高低音控制器，各種聽音條件預設模式可以縮短軟件開發時間,簡化產品設計過程。能夠滿足從2x1W到2x80W/2x40W + 1x80W
/1x160W的不同音頻功率需求。

性能特點

Wide supply voltage range (10 V - 36 V)
Three power output configurations
– 2x40W + 1x80W
– 2x80W
– 1x160W
PowerSO-36 package (exposed pad up (EPU))
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/hard mute
Individual channel volume and EQ bypass
Bass/treble tone control
Dual independent programmable
limiters/compressors
Automodes
– 32 preset EQ curves
– 15 preset crossover settings
– Auto volume-controlled loudness
– 3 preset volume curves
– 2 preset anti-clipping modes
– Preset nighttime listening mode
– Preset TV AGC
Input and output channel mapping
AM noise-reduction and PWM
frequency-shifting modes
Software volume update and muting
Auto zero detect and invalid input detect
muting
Selectable DDX® ternary or binary PWM
output + variable PWM speeds
Selectable de-emphasis
Post-EQ user-programmable mix with default
2.1 bass-management settings
Variable max power correction for lower fullpower
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

管教排列

典型應用原理圖