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GS3020 Scheda tecnica(PDF) 1 Page - Gennum Corporation

Il numero della parte GS3020
Spiegazioni elettronici  Dynamic Equalizer
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Produttore elettronici  GENNUM [Gennum Corporation]
Homepage  http://www.gennum.com
Logo GENNUM - Gennum Corporation

GS3020 Scheda tecnica(HTML) 1 Page - Gennum Corporation

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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
• 30% smaller by volume than DynamEQ
® I GS3011
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)
GS3020 - 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 channelprocessing
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.
FUNCTIONAL BLOCK DIAGRAM
Revision Date: May 1998
0µ1
100k
1k
- C
11
VB
VREG
C1
2µ2
REGULATOR
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
RTH
CURRENT
REFERENCE
2:1
COMPRESSION
CONTROL
GS3020
RE
CHP
OUT
IN
MGND
COUT
CIN
0µ1
0µ1
12k
C3
0µ1
C2
3n9
- A
- B
R1
68k
RECTIFIER
D
24k
VB
R2
50k
GND
50k
515
2µ2
100k
50k
50k
C4
C5
C7
C6
5
8
2
6
9
3
7
10
11
4
1
All resistors in ohms, all capacitors in farads unless otherwise stated.
Patent Pending.
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
Document No. 521 - 05 - 04


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