參數資料
型號: TAS5716PAPR
廠商: TEXAS INSTRUMENTS INC
元件分類: 音頻/視頻放大
英文描述: 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP64
封裝: 10 X 10 MM, GREEN, PLASTIC, HTQFP-64
文件頁數: 28/64頁
文件大小: 1398K
代理商: TAS5716PAPR
Dynamic Range Control (DRC)
D
R
C
-C
o
m
p
en
s
at
e
d
O
u
tpu
t
DRC Input Level
T
k
M0091-01
1:1 TransferFunction
Implemented TransferFunction
S
Z
–1
AlphaFilterStructure
w
a
B0265-01
Energy
Filter
a w
,
T,K,O
a
w
a,
a
d
/
,
a
w
DRC1
DRC2
0x3A
0x40,0x41,0x42
0x3B/0x3C
0x3E/0x3F
0x43,0x44,0x45
0x3D
Compression
Control
Attack
and
Decay
Filters
AudioInput
DRCCoefficient
NOTE:
=a
=1 – a
a
w
SLOS569 – JANUARY 2009............................................................................................................................................................................................... www.ti.com
The DRC scheme has a single threshold, offset, and slope (all programmable). There is one ganged DRC for the
left/right channels and one DRC for the subwoofer channel.
The DRC input/output diagram is shown in Figure 44.
Professional-quality dynamic range compression automatically adjusts volume to flatten volume level.
One DRC for left/right and one DRC for subwoofer
Each DRC has adjustable threshold, offset, and compression levels
Programmable energy, attack, and decay time constants
Transparent compression: compressors can attack fast enough to avoid apparent clipping before engaging,
and decay times can be set slow enough to avoid pumping.
Figure 44. Dynamic Range Control
Figure 45. DRC Structure
34
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TAS5716
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