FEATURES
• handles high input levels (up to 100 mVRMS)
cleanly
• 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
STANDARD PACKAGING
• 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)
DynamEQ® I
Dynamic Equalizer
GS3011 - HYB DATA SHEET
4
5
10
- C
11
D
+
-
+
-
24k
0.92V
8
GND
VB
VREG
7
C1
2
µ2
C7
2
µ2
C6
0
µ1
R7
100k
R6
100K
15
1
14
16
2
REGULATOR
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
3
8
5
17
RTH
R1
68k
CURRENT
REFERENCE
2:1
COMPRESSION
CONTROL
9
12
C4
0
µ1
GS3011
RE
340
CHP
DOUT
11
3
AIN
9
MGND
10
VC2
VC1
C5
0
µ1
R4
50k
R5 50k
R3
50k
12k
R2
50k
C3
0
µ1
C2
3n9
- A
- B
13
6
2
4
1
7
6
11
RECTIFIER
VB
GC514
All resistors in ohms, all capacitors in farads unless otherwise stated.
Patent Pending.
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION
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.
DynamEQ® 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.
Revision Date: May 1998
Document No. 520 - 66 - 07
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