描述 Description

The STA309A is a single chip solution for digital audio processing and control in multi-channel applications. It provides output capabilities for DDX?. In conjunction with a DDX? power device, the STA309A provides high-quality, high-efficiency, all digital amplification. The device is extremely versatile, allowing inputs of most digital formats including 6.1/7.1-channel and 192 kHz, 24-bit DVD-audio, DSD/SACD. In 5.1 applications the additional 2 channels can be used for audio line-out or headphone drive. In speaker mode, with 8 channel outputs in parallel, the STA309A can deliver more than 1 W.

特性 Features

? Pre and post EQ full 8-channel input mix on all 8 channels
? Bass/treble tone control
? Dynamic range compression
? Dual independent limiters/compressors
? Individual channel and master soft/hard mute
? Automode?:5-band graphic EQ32 preset EQ curves (rock, jazz, pop, etc.)Automatic volume controlled loudness5.1 to 2-channel downmixSimultaneous 5.1- and 2-channel downmix outputs3 preset volume curves2 preset anti-clipping modesPreset movie nighttime listening modePreset TV channel/commercial AGC mode5.1, 2.1 bass management configurations8 preset crossover filters
? Automatic invalid input detect mute
? Automatic zero-detect and invalid input mute
? Advanced PopFree operation
? I2S output channel mapping function
? Advanced AM interference frequency switching and noise suppression modes
? Channel mapping of any input to any processing/DDX? channel
? Independent channel volume and DSP bypass
? Selectable per-channel DDX? damped ternary or binary PWM output
? DC blocking selectable high-pass filter
? Variable per channel DDX? output delay control
? Max power correction for lower full-power THD
? 192 kHz internal processing sample rate, 24-bit to 36-bit precision
? Individual channel and master gain/attenuation plus channel trim (-10 dB to +10 dB)
? Soft volume update
? 8 channels of 24-bit DDX? (direct digital amplification)
? Selectable 32 kHz - 192 kHz input sample rates
? >100 dB of SNR and dynamic range
? Digital gain/attenuation +58 dB to -100 dB in 0.5-dB steps
? Up to 10 independent 32-bit user programmable biquads (EQ) per channel
? 6 channels of DSD/SACD input

簡介

STA309A屬于集成電路（IC）的音頻專用。由制造生產(chǎn)的STA309A音頻專用音頻專用的半導(dǎo)體器件專為音頻信號的濾波、驅(qū)動、放大、轉(zhuǎn)換和接口而設(shè)計。特征包括功能、應(yīng)用、通道數(shù)、接口、電壓和規(guī)格。應(yīng)用包括音頻系統(tǒng)、汽車音頻、消費類音頻、樂器、專業(yè)音頻、通信系統(tǒng)、電信系統(tǒng)、數(shù)字音頻、驅(qū)動器、前置放大器、信號混合、信號處理、語音觸發(fā)器解決方案和 10 Base-T。