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STA309A13TR Datasheet, PDF (1/67 Pages) STMicroelectronics – Multi-channel digital audio processor with DDX | |||
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STA309A
Multi-channel digital audio processor with DDX®
Features
 8 channels of 24-bit DDX® (direct digital
amplification)
 >100 dB of 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
 Automodeâ¢:
â 5-band graphic EQ
â 32 preset EQ curves (rock, jazz, pop, etc.)
â Automatic volume controlled loudness
â 5.1 to 2-channel downmix
â Simultaneous 5.1- and 2-channel downmix
outputs
â 3 preset volume curves
â 2 preset anti-clipping modes
â Preset movie nighttime listening mode
â Preset TV channel/commercial AGC mode
â 5.1, 2.1 bass management configurations
â 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
TQFP64
 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
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.
Table 1. Device summary
Order code
Package
STA309A
TQFP64
STA309A13TR
TQFP64
October 2009
Doc ID 13855 Rev 4
1/67
www.st.com
67
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