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GE570 Datasheet

  • GE570

  • Dual Channel signal processing

  • 7頁

  • ETC

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DynamEQ
廬
II
WDRC IC
GE570 - DATA SHEET
FEATURES
鈥?dual channel signal processing
鈥?4th order state variable filter
鈥?adjustable crossover frequency
鈥?adjustable compression ratio from 1:1 to 4:1
鈥?independent compression ratio adjustment for
low and high frequency band
鈥?adjustable AGC threshold levels
鈥?unique twin average detectors
鈥?handles high input levels
鈥?low THD and IMD distortion
鈥?drives class D integrated receivers
鈥?MPO range externally adjustable
PACKAGING
鈥?/div>
Chip
Au Bump
V
B
18
C
SAD
7
1M
V
REG
8
REGULATOR
SLOW
AVERAGE
DETECTOR
DEVICE DESCRIPTION
The DynamEQ
廬
II product family is a second generation Wide
Dynamic Range Compression (WDRC) system.
GE570 incorporates 24 dB/oct filtering and is designed to
accommodate CIC and ITC size requirements.
The gain and frequency response is dependant on the user鈥檚
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
廬
II, are processed by 2:1
compression before subsequent band splitting.
The 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.
C
FAD
2
1M
FAST
AVERAGE
DETECTOR
1:1A
1
53k5
1:1B
6
85k6
4:1
5
R
HI
R
LO
4
3
R
TH
19
50k
R
CONTROL
1
RECTIFIER
X
V
B
48k
R
H
AGC_IN
IN
11
10k
-A
24 dB / Oct
BAND SPLIT
FILTER
High Frequency
Expander / Compressor
-B
-C
20
48k
OUT
RL
GND
9
10
A
OUT
All resistors in ohms, all capacitors
in microfarads, unless otherwise stated
8k4
15
14
F
OUT
B
IN
16
B
OUT
17
MPO
12k
12
REC
R
FC
14k
13
Low Frequency
Expander / Compressor
FUNCTIONAL BLOCK DIAGRAM
Document No. 522 - 07 - 00
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 tel. +1 (905) 632-2996
Web Site: www.gennum.com E-mail: hipinfo@gennum.com

GE570相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
    版本
    描述
    廠商
    下載
  • 英文版
    Dual Channel signal processing
    ETC
  • 英文版
    Dual Channel signal processing
    ETC [ETC]

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