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參數資料
| 型號： | GC570 |
| 英文描述： | GC570 - DynamEQ? II WDRC IC |
| 中文描述： | GC570 - DynamEQ？二WDRC集成電路 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 118K |
| 代理商： | GC570 |
D y n a m E Q
II
W DRC IC
FEATURES
dual channel signal processing
2nd (4th) order state variable filter
adjustable crossover frequency
adjustable compression ratio from 1:1 to 4:1
independent compression ratio adjustment for
low and high frequency band
adjustable AGC threshold levels
unique twin average detectors
handles high input levels
low THD and IMD distortion
drives class D integrated receivers
MPO range externally adjustable
PACKAGING
Chip
Au Bump
DEVICE DESCRIPTION
The DynamEQ
II product family is a second generation Wide
Dynamic Range Compression (WDRC) system.
GB570 (GC570) incorporates 12 dB/oct (24 dB/oct) filtering
and is designed to accommodate CIC and ITC size
requirements.
The gain and frequency response is dependant on the user’s
environment.
Twin averaging detector circuits are optimized for sound
quality during normal listening without sacrificing comfort
during sudden loud inputs.
All input signals to DynamEQ
II, are processed by 2:1
compression before subsequent band splitting.
The 12 dB/oct (24 dB/oct) band split filter ahead of the
expander/compressor circuits allows for independent
compression ratio adjustment (1:1 to 4:1) in high and low
frequency channels.
The gain setting stage is followed by a class D integrated
receiver preamplifier stage. Symmetrical peak clipping is used
to achieve MPO adjustment.
GB570/ GC570 - DATA SHEET
FUNCTIONAL BLOCK DIAGRAM
All resistors in ohms, all capacitors
in microfarads, unless otherwise stated
Document No. 521 - 99 - 00
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 tel. +1 (905) 632-2996
W eb Site: www.gennum.com E-mail: hipinfo@gennum.com
OUT
MPO
IN
GND
B
OUT
B
IN
REG
IN
A
OUT
F
OUT
R
c
V
REG
R
TH
V
B
C
SAD
C
FAD
4:1
2:1
1:1
R
HI
R
LO
1
2
5
4
3
6
7
8
9
12
11
10
13
14
15
16
19
18
17
20
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
CONTROL
10k
RECTIFIER
RAGC_IN
V
B
50k
REGULATOR
GB570
GC570
48k
48k
8k4
1M
85k6
42k8
1M
14k
12k
1
X
- B
- A
- C
12 dB / Oct
(24 dB / Oct)
BAND SPLIT
FILTER
High Frequency
Expander / Compressor
Low Frequency
Expander / Compressor
R
H
R
L
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