DynamEQ
廬
I
Dynamic Equalizer
GS3011 - HYB DATA SHEET
FEATURES
鈥?handles high input levels (up to 100 mV
RMS)
cleanly
鈥?low THD and IMD distortion
鈥?unique twin average detectors
鈥?dual channel signal processing
鈥?adjustable AGC threshold levels
鈥?highpass filter with adjustable corner frequency
鈥?2:1 compression of high frequencies
鈥?no external capacitors or resistors required
STANDARD PACKAGING
鈥?Hybrid typical dimensions
0.260 in x 0.150 in x 0.120 in
(6.6 mm x 3.81 mm x 3.05 mm)
DESCRIPTION
The DynamEQ
廬
I hybrid is a dynamically adaptive loudness
growth equalizer. Its gain and frequency response is
dependent on the user's environment, and is designed for
level dependant frequency response providing treble
increase at low levels (TILL). The unique twin averaging
detector circuit dramatically reduces pumping effects and
is optimized for mild to moderate hearing loss.
DynamEQ
廬
I has two signal paths for dual channel
processing incorporating 4 amplifying stages ( A, B,
C, D ) and the AGC processing circuit.
Stage A is a highpass channel with 2:1 compression, stage
B is a wideband unity gain buffer. The sum of the two paths
gives a high frequency boost to low level signals, which
gradually compresses to a flat response at high input
levels. Stage C is used for volume control adjustment,
while stage D is a class A power amplifier with receiver
bias current adjustment.
VB
8
GND
5
C7
2碌2
R7
100k
C6
0碌1
R6
100K
7
V
REG
3
C1
2碌2
R
TH
9
R1
68k
C
HP
A
IN
4
2
C3
0碌1
C2
3n9
3
12k
17
8
REGULATOR
15
SLOW
AVERAGE
DETECTOR
1
14
FAST
AVERAGE
DETECTOR
16
2
GC514
0.92V
CURRENT
REFERENCE
2:1
COMPRESSION
CONTROL
RECTIFIER
VB
24k
5
-A
-C
+ -
D
- +
340
10
D
OUT
4
R2
50k
11 R
E
12
-B
13
6
C5
0碌1
R3
50k
R5 50k
R4
50k
7
6
VC2
VC1
C4
0碌1
11
9
10
MGND 1
GS3011
All resistors in ohms, all capacitors in farads unless otherwise stated.
Patent Pending.
FUNCTIONAL BLOCK DIAGRAM
Document No. 520 - 66 - 07
Revision Date: May 1998
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
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