Product overview
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.
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All 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 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 8 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
Circuit Diagram
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STMicroelectronics - STA309A
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