STA323W Datasheet, PDF (1/41 Pages) STMicroelectronics – 2.1 HIGH EFFICIENCY DIGITAL AUDIO SYSTEM

STA323W
1 FEATURES
■ Wide supply voltage range (10-36V)
■ 3 Power Output Configurations
– 2x10W + 1x20W
– 2x20W
– 1x40W
■ Power SO-36 Slug Down Package
■ 2.1 Channels of 24-Bit DDX®
■ 100dB SNR and Dynamic Range
■ 32kHz to 192kHz Input Sample Rates
■ Digital Gain/Attenuation +48dB to -80dB in
0.5dB steps
■ 4 x 28-bit User Programmable Biquads (EQ) per
Channel
■ I²C Control
■ 2-Channel I²S Input Data Interface
■ Individual Channel and Master Gain/
Attenuation
■ Individual Channel and Master Soft and Hard
Mute
■ Individual Channel Volume and EQ Bypass
■ Bass/Treble Tone Control
■ Dual Independent Programmable Limiters/
Compressors
■ Automodes™
– 32 Preset EQ Curves
– 15 Preset Crossover Settings
– Auto Volume Controlled Loudness
– 3 Preset Volume Curves
– 2 Preset Anti-Clipping Modes
– Preset Nighttime Listening Mode
– Preset TV AGC
■ Input and Output Channel Mapping
■ AM Noise Reduction and PWM Frequency
Shifting Modes
■ Soft Volume Update and Muting
■ Auto Zero Detect and Invalid Input Detect
Muting Selectable DDX® Ternary or Binary
2.1 HIGH EFFICIENCY
DIGITAL AUDIO SYSTEM
TARGET SPECIFICATION
Figure 1. Package
PowerSO36 SLUG DOWN
Table 1. Order Codes
Part Number
STA323W
STA323WTR
Package
PowerSO36 (Slug Down)
Tape & Reel
PWM output + Variable PWM Speeds
■ Selectable De-emphasis
■ Post-EQ User Programmable Mix with default
2.1 Bass Management settings
■ Variable Max Power Correction for lower full-
power THD
■ 4 Output Routing Configurations
■ Selectable Clock Input Ratio
■ 96kHz Internal Processing Sample Rate, 24 to
28-bit precision
■ QXpander
■ Video Application: 576 fs input mode suporting
2 DESCRIPTION
The STA323W is an integrated solution of digital
audio processing, digital amplifier control, and
DDX-Power Output Stage, thereby creating a
high-power single-chip DDX® solution comprising
of high-quality, high-efficiency, all digital amplifica-
tion.
The STA323W power section consists of four in-
dependent half-bridges. These can be configured
via digital control to operate in different modes. 2.1
channels can be provided by two half-bridges and
a single full-bridge, providing up to 2x10W +
1x20W of power output. 2 Channels can be provid-
ed by two full-bridges, providing up to 2x20W of
power. The IC can also be configured as a single
paralelled full-bridge capable of high-current oper-
ation and 1x40W output.
Also provided in the STA323W are a full assort-
January 2005
REV. 1
1/41
This is preliminary information on a new product now in development. Details are subject to change without notice.