Description
●The STA309A is a single chip solution for digital audio processing and control in multi-channel applications. It provides output capabilities for DDX® (direct digital amplification). In conjunction with a DDX® power device, it provides high quality, high-efficiency, all digital amplification. The device is extremely versatile, allowing for input of most digital formats including 6.1/7.1-channel and 192 kHz, 24-bit DVD-audio, DSD/SACD. In 5.1 application 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.
●Features
●■ 8 channels of 24-bit DDX®
●■ >100 dB SNR and dynamic range
●■ Selectable 32 kHz - 192 kHz input sample rates
●■ 6 channels of DSD/SACD input
●■ Digital gain/attenuation +58 dB to -100 dB in 0.5 dB steps
●■ Soft volume update
●■ Individual channel and master gain/attenuation plus channel trim (-10 dB to +10 dB)
●■ Up to 10 independent 32-bit user programmable biquads (EQ) per channel
●■ Bass/treble tone control
●■ Pre and post EQ full 8-channel input mix on all 8 channels
●■ Dual independent limiters/compressors
●■ Dynamic range compression or anti-clipping modes
●■ AutoModes:
● – 5-band graphic EQ
● – 32 preset EQ curves (rock, jazz, pop, etc.)
● – Automatic volume controlled loudness
● – 5.1 to 2-channel downmix
● – Simultaneous 5.1- and 2-channel downmix outputs
● – 3 preset volume curves
● – 2 preset anti-clipping modes
● – Preset movie nighttime listening mode
● – Preset TV channel/commercial AGC mode
● – 5.1, 2.1 bass management configurations
● – AM frequency automatic output PWM frequency shifting
● – 8 preset crossover filters
●■ Individual channel and master soft/hard mute
●■ Automatic zero-detect and invalid input mute
●■ Automatic invalid input detect mute
●■ Advanced PopFree operation
●■ Advanced AM interference frequency switching and noise suppression modes
●■ I2S output channel mapping function
●■ Independent channel volume and DSP bypass
●■ Channel mapping of any input to any processing/DDX® channel
●■ DC blocking selectable high-pass filter
●■ Selectable per-channel DDX® damped ternary or binary PWM output
●■ Max power correction for lower full-power THD
●■ Variable per channel DDX® output delay control
●■ 192 kHz internal processing sample rate, 24-bit to 36-bit precision
