DynamEQ -1
Dynamic Equalizer-Reflowable
GS3030 - 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?26% smaller than original DynamEQ
廬
-1 GS3011
STANDARD PACKAGING
鈥?Hybrid Typical Dimensions
0.250 in x 0.115 in x 0.070 in
(6.35 mm x 2.92 mm x 1.78 mm)
DESCRIPTION
The DynamEQ
廬
-1 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
-1 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.
C
SAD
15
廬
V
B
5
GND
14
GND
13
100nF
C
REG
12
V
REG
10
C
REG
REGULATOR
100k
SLOW
AVERAGE
DETECTOR
100k
FAST
AVERAGE
DETECTOR
R
TH
1
R1
68k
C
HP
11
C2
IN
9
CURRENT
REFERENCE
2:1
COMPRESSION
CONTROL
RECTIFIER
VB
24k
12k
-A
3n9
-C
3
OUT
D
11 R
E
2
C3
0碌1
MGND
8
R2
50k
-B
50k
50k
50k
1k
515
GND
4
0碌1
0碌1
7
All resistors in ohms, all capacitors in farads unless otherwise stated.
Patent Pending.
GS3030
6
C
IN
C
OUT
FUNCTIONAL BLOCK DIAGRAM
Revision Date: May 1998
Document No. 521 - 22 - 04
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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