Programmable
DynamEQ
®
II
- GM3038
DATA SHEET
FEATURES
•
DynamEQ
®
II flexibility
DESCRIPTION
GM3038
•
five programmable parameters
•
24 dB/oct state variable filter
•
twin average detectors
•
handles high input levels
•
drives class D integrated receivers
STANDARD PACKAGING
Hybrid typical dimensions:
0.250 in x 0.115 in x 0.120 in
(6.35 mm x 2.92 mm x 3.05 mm)
The GM3038 programmable hybrid is composed of a
DynamEQ
®
II Wide Dynamic Range Compression signal
processor and the ER102 controller memory chip. The
hybrid incorporates 24 dB/oct filtering.
The gain and frequency response are dependent on the user’s
environment. The Twin Average Detector circuit is optimized
for sound quality during normal listening without sacrificing
comfort during sudden loud sounds.
The GM3038 features five programmable parameters:
independent compression ratio adjustment in the High and
Low frequency channels, threshold adjustment, crossover
frequency adjustment and MPO adjustment.
The ER102 controller memory chip is supported by a variety
of programmers available on the market.
The output stage is designed as a preamplifier for the class D
integrated receiver.
V
B
1
V
DD
C6
0µ22
C5
10n
R5S
R5
R5R
R6R
R6
4:1
5
R
HI
4
R
LO
3
600kΩ
R6S
ER102
GM3038
V
B
18
C
SAD
7
1M
C
FAD
2
1M
1:1A
1
53.5kΩ
1:1B
6
1MΩ
85.6kΩ
V
REG
7
V
REG
8
C1
0µ1
R
TH
19
R3R
REGULATOR
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
CONTROL
1
RECTIFIER
X
50k
R3
150kΩ
11
IN
R
AGC_IN
V
B
48k
OUT
-B
-C
48k
8k4
15 MPO
16
B
IN
17
B
OUT
R2
150kΩ
C7
0µ22
4
B
IN
3
B
OUT
R2R
20
C4
2
0µ1
OUT
R
H
C2
IN
6
0µ2
10k
-A
24 dB / Oct
BAND SPLIT
FILTER
High Frequency
Expander / Compressor
RL
GND 8
V
SS
GND
9
10
A
OUT
12k
12
REC
13
R
FC
Low Frequency
Expander / Compressor
14k
R4
300kΩ
14
F
OUT
SDA 5
SDA
C3
0µ1
R4R
Patent pending
All resistors in ohms, all capacitors in farads
unless otherwise stated.
BLOCK DIAGRAM
Revision Date: August 1999
Document No. 521 - 62 - 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
GENNUM [ GENNUM CORPORATION ]
