LG LH-W750TA Service Manual page 16

1 FEATURES
Wide supply voltage range (10-36V)
■
3 Power Output Configurations
■
– 2x40W + 1x80W
– 2x80W
– 1x160W
Power SO-36 Package
■
2.1 Channels of 24-Bit DDX®
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100dB SNR and Dynamic Range
■
32kHz to 192kHz Input Sample Rates
■
Digital Gain/Attenuation +48dB to -80dB in
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0.5dB steps
428-bit User Programmable Biquads (EQ) per
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Channel
2
I C Control
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2
2-Channel I S Input Data Interface
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Individual Channel and Master Gain/
■
Attenuation
Individual Channel and Master Soft and Hard
■
Mute
Individual Channel Volume and EQ Bypass
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Bass/Treble Tone Control
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Dual Independent Programmable Limiters/
■
Compressors
Automodes™
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– 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
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Shifting Modes
Soft Volume Update and Muting
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Auto Zero Detect and Invalid Input Detect
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Muting Selectable DDX® Ternary or Binary
May 2006
2.1 HIGH EFFICIENCY
DIGITAL AUDIO SYSTEM
Figure 1. Package
PowerSO36 SLUG UP
Table 1. Order Codes
Part Number
STA328
STA32813TR
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
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Selectable Clock Input Ratio
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96kHz Internal Processing Sample Rate, 24 to
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28-bit precision
QXpander
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Video Application: 576 fs input mode suporting
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2 DESCRIPTION
The STA328 is an integrated solution of digital au-
dio processing, digital amplifier control, and DDX-
Power Output Stage, thereby creating a high-pow-
er single-chip DDX® solution comprising of high-
quality, high-efficiency, all digital amplification.
The STA328 power section consists of four inde-
pendent 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 2x40W +
1x80W of power output. 2 Channels can be provid-
ed by two full-bridges, providing up to 2x80W of
power. The IC can also be configured as a single
paralelled full-bridge capable of high-current oper-
ation and 1x160W output.
Also provided in the STA328 are a full assortment
of digital processing features. This includes up to
4 programmable 28-bit biquads (EQ) per channel,
STA328
Package
PowerSO36 (Slug Up)
Tape & Reel
Rev. 3
1/41