Gennum Corporation GM3038 Datasheet
DynamEQ
GM3038
Programmable
®
II - GM3038
DATA SHEET
FEATURES
®
• DynamEQ
II flexibility
• 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)
V
B
1
V
DD
C
10k
SAD
R
AGC_IN
7
DETECTOR
B
V
V
REG
7
C1
0µ1
R3R
C2
6
IN
GND
SDA
0µ2
8
SDA
5
Patent pending
All resistors in ohms, all capacitors in farads
unless otherwise stated.
REG
R
TH
R3
150kΩ
IN
V
SS
GND
V
18
8
REGULATOR
19
50k
11
9
C6
0µ22
1M
SLOW
AVERAGE
CONTROL
- A
A
C5
10n
C
10
OUT
FAD
AVERAGE
DETECTOR
1:1A
53.5kΩ
12
24 dB / Oct
BAND SPLIT
FILTER
14k
13
R
FC
1M
FAST
RECTIFIER
12k
12
REC
C3
0µ1
BLOCK DIAGRAM
DESCRIPTION
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.
GM3038
R5S
1:1B
6
85.6kΩ
1
X
R4R
R5
1MΩ
R5R
R
4:1
HI
4
5
R
High Frequency
Expander / Compressor
300kΩ
H
R
Low Frequency
Expander / Compressor
R4
R6R
R
LO
3
L
14
F
OUT
0µ22
600kΩ
16
B
C7
B
R6S
R6
- B
17
B
OUT
IN
4
IN
ER102
V
B
48k
- C
20
48k
8k4
15
150kΩ
3
B
OUT
C4
OUT
0µ1
MPO
R2R
R2
OUT
2
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
GM3038
ABSOLUTE MAXIMUM RATINGS
PAD CONNECTION
PARAMETER VALUE / UNITS
Supply Voltage 2VDC
Power Dissipation 25 mW
V
OUT
B
Operating Temperature Range -10° C to 40° C
B
Storage Temperature Range -20° C to 70° C
Voltage on SDA pad 16V
OUT
B
IN
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
ELECTRICAL CHARACTERISTICS
Refer to ER102 Data Sheet for GM3038 communication and SDA pin Electrical Characteristics
Conditions: Supply Voltage V
The programmable parameters are adjusted to the following set values unless otherwise specified.
(MPO) R2 - set 0; (TH) R3 - set 15; (FC) R4 - set 7; (HP) R5 - set 0; (LP) R6 - set 0
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Hybrid Current I
Minimum Voltage Vb 1.1 - - V
Total Harmonic Distortion THD V
THD with Maximum Allowable Input THD
Input Referred Noise IRN A Weighted Filter - 3.0 - µV
Total System Gain A
Regulator Voltage V
AGC
Lower Threshold TH
Upper Threshold TH
Compression Gain Range ∆A Gain(-90dBVIN) -Gain(-30dBVIN) 37.5 40.5 43.5 dB
System Gain in Compression A
Min. Compression Ratio CMP
Max. Comp. Ratio CMP
Fast Detector Time Constant τ
Slow Detector Time Constant τ
FILTER
Maximum Crossover Frequency ƒ
Nominal Crossover Frequency ƒ
Minimum Crossover Frequency ƒ
Filter Rolloff Rate - 24 - dB/oct
= 1.3 V, Frequency = 1 kHz, Temperature = 25°C
B
AMP
= -40dBV at 1kHz - 0.6 1.25 %
IN
V
M
V
REG
LO
HI
60
1 :1
= -23dBV, Rvc = 47kΩ -210%
IN
V
= -90dBV 46 49 52 dB
IN
I
= 30µA 890 930 1000 mV
LOAD
V
=-60dBV 26 29 32 dB
IN
VIN=3kHz, -60dBV to -40dBV,
R5 - set 31; R6 - set 15 0.9 1.0 1.1 Ratio
4 :1
VIN =3kHz, -60dBV to -40dBV,
R5 - set 0; R6 - set 0 3.6 4.0 4.3 Ratio
FAST
SLOW
c_0
c_22
c_220
R4 - set 0 3.0 3.9 - kHz
R4 - set 7 1.38 1.8 2.18 kHz
R4 - set 13 - 0.9 1.4 kHz
- 370 530 µA
-91 -87 -83 dBV
-36 -32 -28 dBV
-10-ms
- 220 - ms
GND
V
REG
IN
SDA
RMS
521 - 62 - 04
2
GM3038
ELECTRICAL CHARACTERISTICS continued
Refer to ER102 Data Sheet for GM3038 communication and SDA pin Electrical Characteristics
Conditions: Supply Voltage V
The programmable parameters are adjusted to the following set values unless otherwise specified. (MPO) R2 - set 0; (TH) R3 - set 15;
(FC) R4 - set 7; (HP) R5 - set 0; (LP) R6 - set 0
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
STAGE A and B ---
Open Loop Gain (B) A
Input Impedance (A) R
OUTPUT STAGE
Stage Gain A
Max Output Level MPO RVC=220kΩ,VIN=-25dBV -14.5 -12.5 -10.5 dBV
MPO Range ∆MPO R2 - set 0 to set 11 13 15 17 dB
Output Resistance R
All conditions and parameters remain as shown in the Test Circuit unless otherwise specified in the CONDITIONS column.
7
SDA
C1
0µ1
R3R
C2
6
0µ2
V
8
5
SDA
2µ2
3.9k
Table of Defaults
R2 - set 0
R3 - set 15
R4 - set 7
R5 - set 0
R6 - set 0
= 1.3 V, Frequency = 1 kHz, Temperature = 25°C
B
OL_B
IN
C
OUT
V
B
V
B
1
V
DD
V
B
18
V
8
REG
REGULATOR
R
19
TH
50k
R3
150kΩ
SS
GND
10k
11
IN
9
All resistors in ohms, all capacitors in farads unless otherwise stated
C
SAD
R
0µ22
7
AVERAGE
DETECTOR
AGC_IN
C6
1M
SLOW
CONTROL
- A
C5
10n
C
A
-52-dB
91113 kΩ
VIN=-30dBV 7 9 11 dB
-24-kΩ
GM3038
FAD
DETECTOR
10
OUT
1M
FAST
AVERAGE
RECTIFIER
12k
12
REC
C3
0µ1
1:1A
53.5kΩ
1:1B
12
6
85.6kΩ
24 dB / Oct
BAND SPLIT
FILTER
14k
13
R
FC
R5R
R5S
R5
1MΩ
4:1
1
X
High Frequency
Expander / Compressor
300kΩ
R4R
R
R
HI
4
5
R
H
R
L
Low Frequency
Expander / Compressor
R4
R6R
LO
3
14
F
OUT
0µ22
600kΩ
16
B
C7
B
R6S
R6
- B
17
B
OUT
IN
4
R
VC
IN
100kΩ
ER102
V
B
48k
48k
150kΩ
OUT
20
MPO
15
R2
- C
8k4
3
B
OUT
Fig. 1 Production Test Circuit
C4
0µ1
R2R
2
50k
3
521 - 62 - 04
Loading...