GS3011 Datasheet, PDF (1/7 Pages) List of Unclassifed Manufacturers – DynamEQ I Dynamic Equalizer

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
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.
VB
GND
8
5
V_{REG 3}
R_TH 9
C1
2µ2
R1
68k
C7
2µ2
R7
C6
0µ1 R6
100k
100K
7
15
1
14
16
2
8
REGULATOR
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
0.92V
17
CURRENT
REFERENCE
2:1
COMPRESSION
CONTROL
RECTIFIER
GC514
VB
C_HP 4
C2
3
12k
A_IN 2
3n9
C3
0µ1
R2
12
50k
MGND 1
-A
-B
13
R3
50k
All resistors in ohms, all capacitors in farads unless otherwise stated.
Patent Pending.
-C
6
11
9
C5
0µ1
R5 50k
R4
50k
C4
0µ1
7
VC1
24k
5
+-
-D ⁺
4
340
10
GS3011
6
VC2
10
D_OUT
11 R_E
FUNCTIONAL BLOCK DIAGRAM
Revision Date: May 1998
Document No. 520 - 66 - 07
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 tel. [phone]
Web Site: www.gennum.com E-mail: [e-mail]