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STA309B Datasheet, PDF (1/66 Pages) STMicroelectronics – Multichannel digital audio processor with FFX® | |||
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STA309B
Multichannel digital audio processor with FFX®
Preliminary data
Features
â 8 channels of 24-bit FFX®
â >100 dB SNR and dynamic range
â Selectable 32 kH-192 kHz input sampling rates
â 6 channels of DSD/SACD and PDM input
â Digital gain/attenuation +58 dB to -100 dB in
0.5 dB steps
â Advanced âpop-freeâ operation
â Digital âpop-freeâ operation for single-ended
mode
â Soft volume update
â Individual channel and master gain/attenuation
plus channel trim (-10 dB to +10 dB)
â Up to 10 independent 32-bit user-
programmable biquads (EQ) per channel
â Bass/treble tone control
â Pre- and post-EQ full 8-channel input mix on all
8 channels
â Dual independent limiters/compressors
â Dynamic range compression or anti-clipping
modes
â AutoModes
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 AM frequency automatic output PWM
frequency shifting
â 8 preset crossover filters
â Individual channel and master soft/hard mute
VFQFPN-56
â Automatic zero-detect and invalid input mute
â Automatic amplifier power-down on clock loss
â Advanced AM interference frequency
switching and noise suppression modes
â I2S output channel mapping function
â Independent channel volume and DSP bypass
â Channel mapping of any input to any
processing/FFX channel
â Selectable per-channel FFX damped ternary or
binary PWM output
â Max power correction for lower full-power THD
â Variable per-channel FFX output delay control
â 192 kHz internal processing sampling rate,
24-bit to 36-bit precision
Description
The STA309B is a single-chip solution for digital
audio processing and control in multichannel
applications and provides output capabilities for
FFX (full flexible amplification). In conjunction with
an FFX 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 and PDM
for MEMS microphone inputs. In the 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
STA309B can deliver 1 W (maximum).
Table 1. Device summary
Order code
Package
Packaging
STA309B
STA309BTR
VFQFPN56
VFQFPN56
Tube
Tape and reel
January 2012
Doc ID 022570 Rev 2
1/66
www.st.com
66
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