DynamEQ® I
Dynamic Equalizer
GS3020 - DATA SHEET
FEATURES
DESCRIPTION
• handles high input levels (up to 100 mVRMS)
cleanly
The DynamEQ® 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.
• low THD and IMD distortion
• unique twin average detectors
• dual channel signal processing
• adjustable AGC threshold levels
• highpass filter with adjustable corner frequency
• 2:1 compression of high frequencies
• no external capacitors or resistors required
DynamEQ® Ihastwosignalpathsfordualchannelprocessing
incorporating 4 amplifying stages ( A, B, C, D ) and the
AGC processing circuit.
• 30% smaller by volume than DynamEQ® I GS3011
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.
STANDARD PACKAGING
• Hybrid Typical Dimensions
0.250 in x 0.115 in x 0.115 in
(6.35 mm x 2.92 mm x 2.92 mm)
V
B
5
C7
C6
2µ2
0µ1
100k
100k
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
V
10
1
REG
REGULATOR
C1
2µ2
2:1
CURRENT
R
COMPRESSION
CONTROL
TH
RECTIFIER
REFERENCE
R1
68k
V
B
24k
11
9
C
HP
IN
12k
C2
3
OUT
- A
- C
3n9
D
R
E
11
2
C3
R2
515
1k
- B
0µ1
50k
50k
50k
C4
MGND
GND
8
4
50k
C5
0µ1
GS3020
0µ1
7
6
All resistors in ohms, all capacitors in farads unless otherwise stated.
Patent Pending.
C
C
OUT
IN
FUNCTIONAL BLOCK DIAGRAM
Revision Date: May 1998
Document No. 521 - 05 - 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